I have one of the shelby rear adjustable swaybars. Today I went to the muffler shop to have my cat back pipe replaced. I was waiting out front when the guy came and got me to look at something. I went in to see what he was talking about. It was the link on the right hand side of the car thats comes down and connects to the swaybar. It was hitting the braket on the muffler and this was keeping the swaybar from moving corretly. So the guy trimmed it down for me and now it drives and handles better around turns. Just thought you guys might want to know and maybe check yours to see if it is hitting or rubbing this braket.