This has always been in the back of my mind and someday i might even do it. But something that i have always questioned was if you are going to go to the trouble of dropping an SBC in there why the heck not make it a party by making it into a 383? Same package as a 350, twice the punch. And another thing, if you have an AX-15 behind it you shouldnt have to much to worry about, should you? Unless this is a track car, i would tend to think it would be just fine, at least for a while.
Anyway, if your gonna do it, do a 383. :rock on:
EDIT: http://jalopnik.com/5574093/holy-toledo-its-a-sbc-comanche-for-3900