Standard Uncoated Hedders; 1-5/8-2 Standard Uncoated Hedders; 1-5/8-2 Hedman Hedders for 64-81 Various Pontiac Cars 326-4551-5/8-2 What happens when you use standard headers on aftermarket cylinder heads? Some factory Pontiac heads require front & rear manifold bolt holes be drilled. Standard Uncoated Hedders; 1-5/8-2
Some factory Pontiac heads require front & rear manifold bolt holes be drilled.

Standard Uncoated Headers; 1-5/8-2 in. Tube Dia; FULL LENGTH Design

Standard Uncoated Headers; 1-5/8-2 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design


Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Pontiac models for decades. Each set uses mild steel, smooth... (Read More)

Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Pontiac models for decades. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Firebird, GTO, Lemans, Grand Prix or Tempest exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.

The LONG-TUBE design provides ample exhaust flow to let your 326-455 Pontiac engine breathe easy, and produce maximum horsepower and torque. These headers are uncoated, and ship from the factory with a temporary black paint that will burn off when submitted to normal operating temperatures. They are also available with a ceramic-metallic finish.

Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.

Due to the location of the oil filter on these vehicles, relocation of the oil filter may be required to provide header tube clearance. We recommend the use of a Trans-Dapt Performance Products' #1120 (cast aluminum), or Hamburger's Performance Products #3365 (billet aluminum) oil filter relocation kit. Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.

(Read Less)

Product Specifications

(PLEASE REVIEW THE FOLLOWING PRODUCT SPECIFICATIONS & FOOTNOTES THOROUGHLY)

  • Tube Diameter 1-5/8 in. x 2 in.
  • Tube Style Long Tube
  • Collector Style Ball and Socket Style (Gasketless)
  • Air Conditioning Yes
  • Automatic Transmission - Column No
  • Automatic Transmission - Floor Yes
  • Manual Transmission - Column No
  • Manual Transmission - Floor No
  • Collector Attachment 3 in.
  • Collector Size 3 in.
  • Contents headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware
  • E.O. # Yes
  • Emissions Notes EO# D167-27 (click here for covered vehicles in document on ARB.CA.GOV website)
  • Exhaust System Dia 2-1/2 in.
  • Finish Uncoated
  • Finish Type Uncoated Mild steel
  • Flange Style Standard
  • Flange Thickness 0.25 in.
  • Header Port Shape Oval Port
  • Header Style Long Tube
  • Notes 64-81 Various Pontiac Cars 326-455
  • Port Shape Oval
  • Power Steering Yes
  • Installation Notes Modification to reverse lockout (back drive) mechanism may be required.
  • Installation Notes Some heads may require drilling and tapping of end bolt holes.
  • Material Mild Steel
  • Tube Design LONG TUBES
  • Tube Length Long Tubes
  • Tube Material Thickness 18g
  • Tube Size 1-5/8 in. x 2 in.
  • Variations 28146
  • with A.I.R. System No
  • with EGR No
  • Weld-Up No
  • Reducer Outlet Size 2-1/2 in.
  • Tuned No
  • Bolts/Studs Included Yes
  • Catalytic Converter(s) Included No
  • Collector Bolts Included Yes
  • Crossover Pipe Included No
  • Gasket Or Seal Included Yes
  • Installation Hardware Included Yes
  • Motor Mounts (Included) No
  • Mounting Hardware Included Yes
  • Reducers Included Yes
  • Transmission Mount/Crossmember (Included) No
  • Y-Pipe Included No
  • Quantity Sold as a pair.
  • Primary Tube Gauge 18g
  • Primary Tube Diameter (in) 1.625 in. x 2 in.
  • Package Contents One pair of headers, head flange gaskets, collector flange gaskets (when applicable), 3-bolt exhaust adapters, mounting hardware
  • Header Material Mild Steel
  • Header Finish Uncoated
  • Cylinder Head Port Shape Oval
  • Cylinder Head Stock Profile Heads
  • Header Construction Standard-Duty
  • Replacement Gasket 27600
  • Replacement Head Flange Gasket 27600
  • California Proposition 65 WARNING: Cancer. For more info visit www.P65Warnings.ca.gov

Vehicle Applications

      YearC.I.D.LiterCylindersDrive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      YearC.I.D.LiterCylindersDrive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesRACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesRACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
      YearC.I.D.LiterCylindersDrive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      YearC.I.D.LiterCylindersDrive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      YearC.I.D.LiterCylindersDrive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesOFF-ROAD USE ONLY! This model year is NOT covered under the part number's EO. Call for current status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesOFF-ROAD USE ONLY! This model year is NOT covered under the part number's EO. Call for current status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
      YearC.I.D.LiterCylindersDrive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (10) Not For Ram Air III or IV style heads.
      (2) Three tube design.
      (23) Some heads require drilling and tapping of end holes.
      (236) Requires Trans-Dapt Performance Oil Filter Relocation Kit 1120
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions Notes1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
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