Riser, Crusader GM Small & Big Block V8

Riser, size 4” or 101.6mm. For: Crusader GM Small Block V8 305-350cu.in. (Models 220 & 270). For: Crusader GM Big Block V8 454cu.in (Models CH350 and 454XL). Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty. For: Crusader GM Small Block V8 305-350cu.in. (Models 220 & 270) For: Crusader GM Big Block V8 454cu.in (Models CH350 and 454XL) Meets or exceeds manufacturer's recommended specifications Backed by Sierra's limited lifetime warranty