Seller notes

Here is a high performance exhaust manifold that GM never produced. We have produced what everybody was asking for. This is the high performance solution instead of headers.Features:Large 2 1/4″ outlet on the driver and passenger side manifolds (original stock manifold is 2″)No crossover pipe hole to plug on the passenger sideDivided center port designLarger design for better air flowDirect bolt on with no modifications neededThese manifolds were conformed from the 1970 455 W30 manifold and ...

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