Nothing is a direct bolt in and go except the A833OD 4 speed. I guess if I was gonna do one, I'd probably do the 904 based A500. The GM 200 is a good transmission, but would require beefing up pretty good and also cutting the transmission tunnel.......so if that's the case, keep it Mopar and use the A500.......or 518......whichever, but they are NOT a bolt in deal. Nothing really is except the A833OD. Now....there IS another alternative. You could use the A999 904 lockup transmission. There are a few companies that make custom lockup converters. That would be a direct bolt in. Although not an OD, the converter lockup is very similar to another gear.
