I have a 2000 Dakota 4x4 with a 4/7L automatic. The transfer case is binding real bad, runs fine in 2wd. The case is a NP 231 D. I went to the junk yard but they only had 3 Dakotas. My question is "what other vehicles might have the same transfer case? They have plenty of Durangos, Rams, and Jeeps." Or, is there another case that will easily interchange? I don't want to do any modifications if I can avoid that. Thanks!