Here is a kit that has everything but the pedal assy. and the starter to convert your 93 to a NV4500. Good luck!:rockwoot:
http://www.high-impact.net/transmission_and_gear/nv4500_dodge5.9diesel88-03_auto.htm
I have been told to be able to take a trans from a chevy it has to be from a 96 or newer.
The Chevy and Dodge NV4500's are the same for the most part. The only reason I have heard of that you can't use the Chevy 4500 is because the input shaft size is a 23 spline and the Dodge is a 29 spline. Other than that I dunno. I plan on doing this because I really need more gears for the highway and no one wants to tell me what I need to do to put a 47RH in my truck.:bang