My existing exhaust manifold casting # 3835587 is damaged. I've found a likely replacement from a 1954 Chevy truck 235 for sale on Ebay. The seller can't read the casting number. In the photo, it appears to be the same manifold. I know the block changed between 54 and 55 for the new water pump. Does anybody know if the intake/exhaust manifolds are the same? Thanks!

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