Sanderson Shorty Headers - 1-5/8 in Primary - 2-1/2 in Collector - Silver Ceramic - Small Block Chevy - GM A-Body 1964-81 (Pair) MGXR Manley's Race Master valves have

Manley's Race Master valves have straight

a solid steel core for strength and durability

has 13/16"-16 threads for spin-on style oil filters and includes mounting hardware and O-rings

Holley 2300/4150/4160

1975-1978 GMC G25

Sanderson Shorty Headers - 1-5/8 in Primary - 2-1/2 in Collector - Silver Ceramic - Small Block Chevy - GM A-Body 1964-81 (Pair) MGXR Manley's Race Master valves haveProduct Description: Headers Shorty 1. 625 in Primary 2. 5 in Collector Steel Silver Ceramic Small Block Chevy GM A Body 1964 81 Pair Founded in 1964, Sanderson started out producing custom headers for the emerging hot rod scene. They have since grown and expanded their product line to include headers and exhaust accessories for a wide variety of late model applications.