440/520 Stroker with max wedge exhaust manifolds question

fishmens67 said

I hav

I have a set of max wedge manifolds and they are a far cry from a header, just a hogged out heavy manifold.

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I have a 77 truck block 400 . I was thinking that if I don't use a 440 block for a 520, I'll use the 400 block for a 512