Some info on the NV3500. Looks like the NV3500HD would fit your project needs.
http://www.dodgeram.org/tech/transmission/nv3500_spec.htm

I have the NV3500 in my 99 1500 CC with 260,000 miles on it and have never had any problems with it.


1974 Dodge Dart Sport 340 4 Spd Endless Project 1999 Ram 1500 CC 5.2 5 speed