The 500's, 42 rh/re, were used behind the 4.0's. There was a 44re that came behind the 5.2's. The starter was on the opposite side from normal mope stuff. Kicker was that the RE series of trans were electronic, needing a controller, and the RH series were hydraulic and could be operated with a couple of toggle switches for the lock up and o/d. If my memory serves me right from my dealership parts time, the pans were the same for the two units. The 46/47/48 units use the 727 style pan. I'm not sure if you can retrofit an RE series trans to make it into an RH style.. The RE units came out in 96 for all Jeep, truck and vans. RH units are 95 back. Also, the Jeep starter is not the same as other applications.