So, I have an '08 and theres a rattle coming from my exhaust. It's internal and its something bouncing around in the pipes between the cat's I think IDK, and my mechanic said it couldn't be removed but wasn't harmful. It's extremely annoying however. So, I started to look at the cost to replace it, and figured I'd look to see if there were any aftermarket ones. So far I cant find any. Anyone have any information on some?