T.C. Guide

I havnt had any luck searching around for a write up/guide for swapping out a 21 spline Pilot Bushing for a 23 spline. i hear it requires almost complete dissasembly & reassembly(the part i would have trouble with If any one has a link saved to help me on my way that would be appreciated. T.C. is the 231.
Thanks!

This company helped me alot http://www.novak-adapt.com/index.htm

pay attention to the input bearing with, they come in two sizes.