Your engine swap will be an expensive endeavor no doubt. Maybe you would be better off with gears in the tcase, gears in the axles, and a 1.6 motor swap down the road. Just check out what Kurt is doing to his sammi, and I am picking one up for my son this weekend.
Zuk axles and a 4.3 screams grenaded birfields! Get some toy axles should be able to find a set for cheap and then sell you axles to offset the toys. What year motor, type of tranny and t-case did you get?
ok this is amazing i just got my hands on some yota axles but the bad thing about it is that they sat up in the wisconson or some place like that and the breaks both front and rear are shot they are full of rust and i got to completely relace the rear drums. these axles need some wicked TLC to get them running again. the front is off set to the right and i belive that the t-case on the 4.3 is to the left any ideas or susgestion? i dont know what year the 4.3 is but ill post that up later tonight.
You are going to have a really hard time fitting all that drivetrain under the Zuk. The 4.3/700/ and whatever tcase will be really long and require some stretching of the wheelbase to fit. You really are better off waiting on the motor swap, slapping in the yotas and some tcase gears. Kurt has a lot of info on this swap stuff.