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Will 1956 exhaust manifolds fit my 1955 engine? The part numbers are 1637390 and 1637391. They look the same, but of course, l don't know! Thx. MIKE
I don't know for sure, but I do know the heads are different part numbers '55-'56. I'll check to see if I have a '55 manifold here I can hold up against a '56 head, which should be the same as checking it in reverse.
