I had a 6" Fabtech Lift put on my '01 screw today. I am using 35/12.50/20 Mud Grapplers, and American Racing 311 20x8 wheels with 5.5" of backspacing. I have some pretty good rubbing on my torsion bars at FULL lock, is there any thing I can do to stop this? I am not against wheel spacers either, It this will correct my problem, i'll probably do it

I have plenty of clearance by the bumper

 

The wheels are the problem. You need a wheel with 4.5 inches of backspacing. A wider wheel would also help.

 

I have 4.5 and they sit real nice.