I got lots of questions. first, is there a difference between a 2wd and a 4wd nv4500? will a transfer case off a 47re 4x4 fit a nv4500? are nv4500 and nv5600 interchangable? Im pretty confident I can get this done but I just need to know what parts fit before I start looking for a doner truck. wich brings me to my next question. anybody got a second generation 5 or 6 speed doner truck?