Dakota/Durango drivetrain in an Abody?

Try rephrasing your question in different ways when you do the thread searches, sometimes that's the most time consuming part of doing the research.

Short answer; pre Hemi motors are a virtual bolt in with the right bits and you'll find the earliest versions of the 500 (904) and 518 (727) overdrive automatics transmissions to be non electronic with simple electrical connections. Fitting them through the torsion bar crossmember without totally cobbling up the car is the trick, and one reason why so many that can't think outside the box, cop out, and abandon the torsion bars. 8 1/4 rear ends require the correct length driveline, spring pad spacing, wheel offset for housing width, and brake hookups. Nothing special.