Project turned upside down, please input!

Yeah, a standard small block bellhousing fits just fine if you're using an old 4 speed. I put an 833 behind my 5.7 and kept the bellhousing that was on the 318 that was in it. You will need a 130 tooth swap flywheel as well. I found one on Ebay for $200 which was $100 cheaper than at Moparts Connection (about the only other place I've seen them). You also have to trim the input shaft some (I had to trim between 3/4 and 5/8") and get a register style pilot bearing/bushing. To put the bushing in you will have to chisel out the ring that is most likely currently in the back of the crank. It was a major pain for me and took the better part of 3+ hours, but if you have the right tools it might not be so bad.

The bushing in the back of the crank is only on LX engines (Charger, Magnum etc.) Use a carbide cutter in your die grinder to cut a groove through it, ( relieves the press in tension ) had it out in 10 minutes...