If you're not in a hurry then buy a bare SN-95 rearend housing that still has its main caps with it. Build off of it so you won't have any down time with your car until it's time to throw it in there. With that rearend out of the car you can take it here, there, or wherever to get it beefed up/set up. You won't even have to leave you car at a shop overnight which tends to worry a lot of individuals.