Drivetrain advice for engine swap

The HP to 904 discussion comes up here often and the concensous has been the 904 will handle whatever you throw at it after a quality rebuild. As far as the rear, hang around here awhile somebody will have one for sale, I've seen 8 3/4 rears go from 300 to 1200 complete. A big spread so if you watch for a while you could get one somewhere in between. The B and E housing can be cut and refitted with aftermarket axles or the axles can be reworked as wll as the case. A Ford 9" is also an option. You can get them from Explorers and Rangers some with disc brakes.