I am getting a 4x4 trans from a 97 taco. In order for the t-case to work, I need a 23spline input....right? I just want to make sure before I go spending money on the t-case portion. Also, how difficult is it to change it from 21spline to 23spline. I see that Marlin makes the TST 23spline input gear. Just want to get it right. Seems like the 23spline stuff is hard to come by. Thanks