i am helping my budy do that to hes truck right now, it's not that hard there is only one plug that needs to be changed, you use the oil presher sending unit for the 3.0, and you have to put a 10k ome resitor in the gagecluster for the tac(i have a pic of were it go's pm me about it or al foget), and you'l need an oil pan from a t100 or sky manufaching has that for $199.00 i think.
improtant when you get you moter get the wireing harnes and the ECU to go with it that will be way eser than trying to find it, and get an erly model 1995-1998 (less wiring) you can pm me if you need help :awesomework: