8 1/4 rear end
I've been looking around and found a guy locally that has an A-body 8 1/4 rear for sale for $100. This thread pretty much answered my question. It'll be behind a mildly rebuilt 440 with an automatic transmission. I don't plan on making huge horsepower for a while, so I think it'll work for me. Plus it's only $100 and it'll bolt right in.