Originally Posted by superduty_5.9
I like you idea but most are trying to do it the cheapest way possible buy using their original parts. I know alot of people said the 5th gear in an AX15 is useless unless on flat ground but why would you want to go backwards and use a 4 speed? What year and model would you get the t18 and 1356 T-case from and how much would it cost? I really do like your idea just trying to figure out which is easier and cheaper!
IIRC, the T-18 is worse than that. It's the sister to the NP435, and as such is a 3 speed with a granny low gear (crawl) at the bottom.
I have my concerns about the torque of a diesel running thru a car transmission, but 3 actual speeds seems like a step backwards, IMHO.