get a taco auto 4wd trans/transfer swap output shaft from taco auto to 1uz auto tap out 2 holes to take extra mounting bolts and bolt up the taco transfer, its as easy as that, depending on the model the output shaft may not need swapping out just shortining as per the taco auto, the auto is the same family an is very simular, there is a thread on this with a forerunner/surf so do a search