how hard is it to change a 4x2 4l60e to a 4x4? the donor looks like its out of a 98 trans am. i have a manual transfer case. all the electrical and stuff should be the same as a 04 silverado correct? im gonna tear it all the way down and hopefully learn how to rebuild it. gonna try and have some fun with it. is it possible to change it? obvioisly pull off the tail shaft? hopefully as simple as changing the output shaft to a larger one....? any input is helpful. except you pl4yboy. stay out of my thread