It's a 340 car I should keep the drive train it came with. I was thinking of OD for as much as I know everything about GM trannies.. the 200 is good and can be built to be even better but the proper case needed to build one that will last are difficult to find and gm parts in a in a mopar.. not really my flavor. I have built some older fords that were built ford tough with chevy stuff but I just couldnt do it for a dodge..