OMG I was going nuts. Ever since I installed the FR3 handling pack, I was experiencing a thumping in the rear when I would hit a bump. That was PURE pain to solve. I would rather rebuild an engine than to to that again. I'm talking about jacking the rear end up and removing the wheels and bolts from the rear sway bar at least a dozen times trying to figure out "WHERE!!!!!!!" this darn I wanted to use a harsher word but it would have been censored thumping was coming from. On the probably 13th time of jacking up putting on stands removing wheels removing bolts. I FINALLY got rid of it. DEEP EXHALE!!!!!!! My best guess is that it was coming from the hanger mounts. I moved them left and right to find center and than tightened them so much I thought I would snap the bolts and the thumping is gone. SWEET FRACKING RELIEF!!!!!!!

 

"if this shelbys thumping"