Slow, Driving Rustoration 1972 Dart

sireland67 said

I don't think they are in the same place.
Why would the other manifolds not work, they have the same bolt pattern.

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My 318 exhaust ports are shorter by almost 1/4" and there isn't even mating surface to match the manifolds. I had almost 1/4" of manifold mating surface hangin off of the head surface.