Im in the middle of swapping out the 4l60e in my wife's 96 k1500. I got a nv3500 from a 88 k1500 but the 96 np241 won't fit on the 88 output shaft. My question is can i get a bigger input for the 96 np241 32 spline i think and having never split open a tc is this something i could do myself?