I converted my 2wd 2002 to floor shift 4wd. The swap was pretty straight forward except for cutting all the front diff mounts out of the doner truck and welding them into mine. That part was pretty time consuming. A few of the guys “cheated” and installed a lift at the same time and saves from having to weld in the drivers side front diff mounts. The 4wd harness plugged in under the fuse box and with the right tune the 4wd indicator on the dash works.