^ he speaks the truth here. While costly, setting up your own gears with the questions you asked will prove more costly when redone. Not for the faint of heart so to say. If one was to want to learn I'd say get a Toyota or similar 3rd members and learn in an easy one. For the application you are shooting for a case spreader, dial indicators, gear paint, setup bearings, bearing pullers, and a few other things that will run the tab up past the cost of the gears and setup from reputable driveline shop. After all this the gears won't carry warranties unless you send all setup specs to manufacturer afterwards.
Be prepared. You need a darn good understanding of what is going on there to complete this successfully. Did my own gears, but even with the tools and a friend to help it wasn't easy.
84 xj 350tbi, sm465, 203/205, 60/70. links and other junk.
what size sawzall blades does it take to fit 40's?