Without a transmission jack, 452 hours. With one, mine took about 6-7 hours. Trying to balance the tcase on a floor jack and maneuver it at the same time by yourself was an excercise in frustration. I quit and bought the jenner jack at Harbor Freight and it was worth it. Also, my transmission crossmember was so beat to shit I couldn't get it to go back in until I unleashed the Heavy Duty cuss words and 5# sledge. The most difficult part is getting at the top 3 nuts on the tcase. :crazyeyes:
You'll need some kind of programmer to switch the 4lo to the 4:1 or you'l go into limp mode. Can't answer the Traildash question