WILL THE TRANS ON A 91 DODGE DAKOTA 3.9 V6 FIT A 91 DAKOTA 5.2 V8.

This is assuming both vehicles have the same drivetrains - BOTH vehicles are 2wd - OR - BOTH vehicles are 4wd.. Transmission is not directly interchangeable between 2wd and 4wd ... Rear of transmissions are totally different - which will require complete disassembly of both transmissions to exchange the necessary parts - - therefore they are not *reasonably* interchangeable.. Good luck.