I have a flowmaster exhaust installed on my '99 WJ 4.7L. I have noticed lately that there is a ridiculous clanging/banging noise (like metal hitting metal) coming from the right rear. I had a look around and found that the tail pipe has quite a bit of play. The hanger is fine but the rubber bushing feel worn. The noise is really annoying. I don't have access to a welder so any ideas as to how to remedy the situation. I have tried to find a new rubber bushing but can't anywhere from quadratec to rock auto. I can wiggle the stock pipe a good 1-1/2 to 2 inches. On a side note, the lower control arm bushings are all worn out (145k and never changed) but I have installed new monroe sensa-tac shocks a couple days ago. Any help would be good cause I'm fixing to go nuts!!

 

Any muffler shop should be able to help you out.

 

Mine is doing something similar. The problem with mine though is broken pieces inside my catalytic converter.