i ordered some magnapacks to weld into my flowmaster catback. hopin the magnapacks will sound better with the o/r x. i hate the sound when i take the rpms up and let off to shift and it makes that rattlin sound. i cant stand it!! so maybe im makin the right choice. if it doesnt help, im puttin on an o/r h. just thought i would tell yall. not that its that big of a deal lol.