Heads come completely assembled with valve seats, valves, guides, seals, .590" lift valve springs, collars and valve keepers Kit also includes rocker cover gaskets, head gaskets, exhaust flange gaskets and hardware for rocker housings, top engine mount and carb support bracket with instructions Use OEM manifolds and exhaust Made in the U.S.A.. CYL.HD. 3.625"66-78BT NAT
