shaky 1st gear, hard to start,

[69mach351]

I wish I was not experienced with stick, then the problem would be an easy fix. I have drove a stick for a year now. The shaking was not the engine, it was a fault in the front brakes. They were grabbing too soon. I fixed that problem. ( Had to tighten the booster to mc rod a little.) I have a bad shake in the rear end however. It only happens sometimes from a stopped start. I know for sure that the rear tires shake up and down. I have torsion/traction bars by the way. the only question that I have now is what is the likely culprit. Should I replace the U-juints and universal joints? Thank you so very much, David