Hello.. I was wondering if anybody knew a good shop in the 757 area that can help me fix my downpipe rattle on my car. The downpipe fits really close to the frame and makes a nasty rattling sound whenever I hit 2k rpms and anytime I go over small bumps as well. I went to a shop yesterday, but they said they couldn't do anything because I was running a test pipe and the pipe is to thick for them to work on... I didn't want to put the cat back on because I wanted to get this problem fixed before I take it to the track and so far theres been no luck on fixing this crap. If somebody knows a person that can help me fix this problem, pm me as well. Thanks