Reducer 4in ID to 3-1/2 in OD

Exhaust Pipe Reducer - 3-1/2 in OD to 4 in ID - Steel - Each

SBC 180 Deg C/O Headers 1-3/4

Headers - 180 Degree Crossover - 1-3/4 in Primary - 3-1/2 in Collector - Steel - Black Paint - Small Block Chevy - Kit

SBC 180 Deg C/O Headers 1-5/8

Headers - 180 Degree Crossover - 1-5/8 in Primary - 3 in Collector - Steel - Black Paint - Small Block Chevy - Kit

SBC 180D C/O Headers 1-3/4

Headers - 180 Degree Crossover - 1-3/4 in Primary - 3-1/2 in Collector - Steel - Black Paint - Small Block Chevy - Kit

SBC 180D C/O Headers 1-3/4 - 1-7/8

Headers - 180 Degree Crossover - 1-3/4 to 1-7/8 in Primary - 3-1/2 in Collector - Steel - Black Paint - Small Block Chevy - Kit

SBC Adapter Plate 23 Deg

Header Flange Adapter - 5/16 in Thick - 1-1/4 in Round Port - Aluminum - Small Block Chevy to Stahl Pattern - Each

SBC Chassis Headers

Headers - Chassis - 1-5/8 in Primary - 3 in Collector - Steel - Black Paint - Small Block Chevy - Pair

SBC Chassis Headers 1-3/4

Headers - Chassis - 1-3/4 in Primary - 3-1/2 in Collector - Steel - Black Paint - Small Block Chevy - Pair

SBC Chassis Headers 1-3/4 - 1-7/8

Headers - Chassis - 1-3/4 to 1-7/8 in Primary - 3-1/2 in Collector - Steel - Black Paint - Small Block Chevy - Pair