Okay, thanks. Right now I have a good running 283 out of the wife's Camaro that I could drop in there but I don't really want to deal with all of the clearance issues with the steering box that I keep hearing about. I'm not even sure that block hugger headers would work in there.

If a 4BT was a viable option then I'd seriously consider that. I was hoping it would be easier than that though. That darn 235 bellhousing with it's tranny mounts causes a whole other realm of problems. I was trying to get away from having to "float" the engine and tranny in there while locating new engine mounts and new tranny tailshaft mounts. I think if I'm going to have to do that either way, then I would probably just go with the "free" 283 that I already have and figure out interference constraints.

Thanks Grigg, you're one heck of a knowledgeable source of information.