alright, well from what eric said, i think ill go with the vc, taking that i understood correctly, all i have to do is put it in like the night before i take it to the dyno, and when i am there all i have to do is pull the driveshaft and im ready to go, and then when i get home i just lift up the car and pull the vc out...or do i actually have to take the bell housing off and get into the tranny to put the vc in?

having a welded diff almost sounds like a rear live axle, am i right?