Quote:
Originally Posted by Oldsguy
Not familiar with the '67 Cutlass frame but I do know that the B bodies of that era had rear mounted steering box which caused interference and almost disqualified the use of headers anyway. Don't know if that would be an issue with the w-x manifolds, probably not.
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Rear steer is not an issue with any A-body.
I assume that you're talking about the 68-older X/W manifold set, not the 69-72 W/Z set. The latter definitely will not fit on a small block due to interferences with the motor mounts, oil filter adapter, and other problems.
The X/W manifolds are somewhat smaller than the W/Z manifolds, but that difference is due to the fact that they do not have the individual runners. That's one of the reasons the W/Z manifolds flow better. I'm a somewhat of a loss to understand why the X/W set would be any advantage over stock SBO manifolds.