SPC Performance EXTENDED LENGTH UPPER 1973-1974 Buick Apollo Base, 1970-1972 Buick GS Base, 1968-1969 Buick GS 350 Base, 1968-1969 Buick GS 400 Base, 1970-1970 Buick GS 455 GSX, 1970-1972 Buick GS 455 Base, 1964-1972 Buick Skylark Base, 1968-1972 Buick Skylark Custom, 1970-1970 Buick Skylark 350, 1972-1972 Buick Skylark 350, 1964-1967 Buick Special Deluxe, 1964-1969 Buick Special Base, 1967-1969 Chevrolet Camaro Z28, 1967-1969 Chevrolet Camaro SS, 1967-1969 Chevrolet Camaro RS, 1967-1969 Chevrolet Camaro Base, 1964-1972 Chevrolet Chevelle SS, 1964-1968 Chevrolet Chevelle Base, 1965-1967 Chevrolet Chevelle Deluxe, 1967-1972 Chevrolet Chevelle Concours, 1967-1969 Chevrolet Chevelle 300 Deluxe, 1967-1968 Chevrolet Chevelle 300, 1968-1972 Chevrolet Chevelle Nomad, 1968-1972 Chevrolet Chevelle Malibu, 1969-1972 Chevrolet Chevelle Greenbrier, 1969-1972 Chevrolet Chevelle Concours Estate, 1970-1972 Chevrolet Chevelle Base, 1964-1972 Chevrolet El Camino Base, 1968-1972 Chevrolet El Camino Custom, 1968-1972 Chevrolet El Camino SS, 1964-1967 Chevrolet Malibu Base, 1970-1972 Chevrolet Monte Carlo Base, 1969-1974 Chevrolet Nova Base, 1973-1974 Chevrolet Nova Custom, 1964-1971 Oldsmobile 442 Base, 1964-1967 Oldsmobile Cutlass Holiday, 1964-1972 Oldsmobile Cutlass Base, 1967-1967 Oldsmobile Cutlass Turnpike Cruiser, 1968-1968 Oldsmobile Cutlass S, 1971-1972 Oldsmobile Cutlass S, 1972-1972 Oldsmobile Cutlass Cruiser, 1967-1972 Oldsmobile Cutlass Supreme Base, 1967-1969 Pontiac Firebird Sprint, 1967-1968 Pontiac Firebird HO, 1967-1969 Pontiac Firebird Base, 1967-1969 Pontiac Firebird 400, 1967-1967 Pontiac Firebird 326, 1968-1969 Pontiac Firebird 350, 1969-1969 Pontiac Firebird Trans Am, 1969-1969 Pontiac Firebird 350 HO, 1964-1972 Pontiac GTO Base, 1970-1971 Pontiac GTO The Judge, 1964-1972 Pontiac LeMans Base, 1969-1970 Pontiac LeMans Safari, 1970-1972 Pontiac LeMans Sport, 1971-1971 Pontiac LeMans T37, 1972-1972 Pontiac LeMans Luxury, 1964-1970 Pontiac Tempest Base, 1964-1969 P
1973-1974 Buick Apollo Base
1970-1972 Buick GS Base
1968-1969 Buick GS 350 Base
1968-1969 Buick GS 400 Base
1970-1970 Buick GS 455 GSX
1970-1972 Buick GS 455 Base
1964-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970-1970 Buick Skylark 350
1972-1972 Buick Skylark 350
1964-1967 Buick Special Deluxe
1964-1969 Buick Special Base
1967-1969 Chevrolet Camaro Z28
1967-1969 Chevrolet Camaro SS
1967-1969 Chevrolet Camaro RS
1967-1969 Chevrolet Camaro Base
1964-1972 Chevrolet Chevelle SS
1964-1968 Chevrolet Chevelle Base
1965-1967 Chevrolet Chevelle Deluxe
1967-1972 Chevrolet Chevelle Concours
1967-1969 Chevrolet Chevelle 300 Deluxe
1967-1968 Chevrolet Chevelle 300
1968-1972 Chevrolet Chevelle Nomad
1968-1972 Chevrolet Chevelle Malibu
1969-1972 Chevrolet Chevelle Greenbrier
1969-1972 Chevrolet Chevelle Concours Estate
1970-1972 Chevrolet Chevelle Base
1964-1972 Chevrolet El Camino Base
1968-1972 Chevrolet El Camino Custom
1968-1972 Chevrolet El Camino SS
1964-1967 Chevrolet Malibu Base
1970-1972 Chevrolet Monte Carlo Base
1969-1974 Chevrolet Nova Base
1973-1974 Chevrolet Nova Custom
1964-1971 Oldsmobile 442 Base
1964-1967 Oldsmobile Cutlass Holiday
1964-1972 Oldsmobile Cutlass Base
1967-1967 Oldsmobile Cutlass Turnpike Cruiser
1968-1968 Oldsmobile Cutlass S
1971-1972 Oldsmobile Cutlass S
1972-1972 Oldsmobile Cutlass Cruiser
1967-1972 Oldsmobile Cutlass Supreme Base
1967-1969 Pontiac Firebird Sprint
1967-1968 Pontiac Firebird HO
1967-1969 Pontiac Firebird Base
1967-1969 Pontiac Firebird 400
1967-1967 Pontiac Firebird 326
1968-1969 Pontiac Firebird 350
1969-1969 Pontiac Firebird Trans Am
1969-1969 Pontiac Firebird 350 HO
1964-1972 Pontiac GTO Base
1970-1971 Pontiac GTO The Judge
1964-1972 Pontiac LeMans Base
1969-1970 Pontiac LeMans Safari
1970-1972 Pontiac LeMans Sport
1971-1971 Pontiac LeMans T37
1972-1972 Pontiac LeMans Luxury
1964-1970 Pontiac Tempest Base
1964-1969 Pontiac Tempest Custom
1964-1969 Pontiac Tempest Safari
1970-1970 Pontiac Tempest GT