The U-Brackets are being held in place with one bolt - bolted to the frame.
What I did to eliminate the problem was weld both brackets to the frame to eliminate the clunk and brackets moving out of place when cornering hard.
But, I have also replaced my endlink rubber bushings with polyurethane, so the stiffness contributed to some of the problems.
If you dont have welding tanks, you can go to a Muffler Man or Midas and tell them to specifically weld the brackets to the frame.
I hope this helps.
