904 or 727

Sweet ride! Either will hold up to the strain if you are thinking of upgrading engines in the future. 727 weighs more than the 904 (if weight is a concern). Also, the bell housing may be a tight fit with the 727 (not to mention you would need to cut down the driveshaft. I had a 318 in my Dart and replaced the drivetrain with a 360/727 setup.