after upper and lower controll arms and spheracle rear end bushings, my drivetrain is still sloppy, i can feel the tranny move slightly when my hand is on the shifter. The most noticible problems are when i tap on the gas from no gas at all, and when i let off the gas. The car seems to jump up and then back down after i let off the gas. its very annoying and im sure its robing me of good acceleration. stangnet.com people said it was my u joints, but i looked at them and they are all stiff, i do have an alluminum driveshaft, haent put that in yet, but this slopy rear end is driving me nuts!