Just been and had the centre section (from cat to back box) replaced because of a horrible rattle at certain rpms. After about 90 mins at the garage the job was complete and to my surprise all my rattles and vibrations seem to have gone away. I had a really annoying one which coincided with 80mph in 5th which I could have sworn was in the cabin but must have been the exhaust cause its gone as well. YYippee!!!