so ive had this problem forever. whenever im getting in the car after letting it sit overnight, i can put it in reverse and the car wont jolt at all, and then again when i put it in drive it still wont be that bad. but its as if when the car is warmed up that it jolts really hard from park to drive and from drive to reverse. i just replaced the torque arm bushing thinking that it was the problem. also the transmission mount seems to be in good condition aswell. and the transmission was rebuilt recently aswell. what else could it be? if it were the u joints wouldnt i feel it when i accelerate hard? also the rear brakes hadnt worked in the longest time and i just got around to putting new calipers, but theyre not adjusted correctly and the pads dont seem to touch the rotors. could this be the problem?

thanks