Hooker Super Competition Headers - 2-1/8 in Primary - 3-1/2 in Collector - Black Paint - Big Block Chevy - GM A-Body 1968-72 4386XXXBK 5" Economy Drag Seat Cover

5" Economy Drag Seat Cover KIR16811

3/8-24 in Female Thread

063 in Bore

4L 4V Aluminum and Cast Iron Block Engines

Hooker Super Competition Headers - 2-1/8 in Primary - 3-1/2 in Collector - Black Paint - Big Block Chevy - GM A-Body 1968-72 4386XXXBK 5" Economy Drag Seat CoverHooker Headers Super Comp Header 2265HKR Black Finish Full Length Tube 2 1 8 in. x 36 in. OD Collector Size 3. 5 in. OD Collector Length 10 in. Port Shape Round Long Tube Lengths Long Transition Collectors Monstrous Low Mid Range Torque Keep Top End Horsepower Provides Finest Fit Most Durable Design Available Vehicle Applications: 1968 1972 Chevrolet Chevelle 1971 1972 GMC Sprint 1968 1972 Chevrolet El Camino Hooker holds to its claim of the