I am in the process of trying to put a 4 speed from a 76 into a 70 and use the 3 speed t-case. I found that the output shaft on the 3 speed is different than the 4 speed and that I need to purchase a gear and bearing for the t-case to make this work. This is a low budget project and I was wandering where would be the best place to get the needed parts. Any help would be appreciated.