i know the complications and others, but my friend whos built two of his own cummins before. amd one currently while on a junk yard search for transfer case and rad. support for his truck today got talking. thinking after im done with college and saving up currently/ first year as a mechanic, im gonna do a 4bt cummins in the '12 jk. pretty much already have it figured out just waiting (its my dd and don't have enough money for another car to start the build). so im wondering thinking its about two+ years in the future, any advice, how much would my 3.6, 6speed, transfer case, and front d 30, maybe rear 44 go for? would any body be interested in that stuff. jk currently has 3500 miles i doubt it would get over 20k by then.