Should be fairly simple, pull the housing off and press out the old one and press in the new one, You will have to expand the rear outside bearing snap ring being careful you don't pull the rear shaft out too far or you will lose the front needle bearings and /or pop the syncro apart, put it into 2nd gear and that will help on the syncro assembly, it's a little close but it can be done as long as you take you time, it's a little easier if you have a helper.
