Tony,
The SB mopar is not narrower than a SB Chevy. But it has a driver's side exhaust manifold that is much closer to the body than the ones You normally have in chevies. I'd not care for installing one in an AD just for this reason. Would be a sort of a crossbreeding and would be somewhat weird to pop up the hood and see such a stranger there. You know, just the 0.02.
