340 exhaust manifold

67Dart273 said
It's not what fits the engine, it's what fits the BODY. And there are certain heads that have smog fittings etc, but those can be plugged and modified to fit. "I believe" you would not want 340 manifolds on small port 273 heads, either.

Yep, he would need to make 1/8th " plate to bolt to the head that would seal the bottom of the port to the manifold or it would leak BAD.