I found this handy little tool, http://www.atraonline.com/VCD2.asp. Just enter the make, model and year and it will tell you all the transmissions used in the vehicle along with some details. One thing I noticed is that the Ram 50 didn't have electronic control on the automatic transmissions whereas the MM did. I know my '88 Ram 50 does not have electronic control. Can anyone verify that the MM does?