Yes, kinda embarrassing story. I had it up on a ramp so I could clean underneath it. Left it there a while and when I went to drive it off, I forgot which way it was facing so I drove off the wrong way and it flipped up and punctured the back box!
Bugger that just put a straight through pipe on it! so longs it just passes the bumper so you don't get too many fumes in the cab it will be fine. (all I have on mine is the small back box no cat and no centre box sounds good but not too loud).
I've got one that's 3 month old £30. Private message me your email and il send you a pic of it. If it's just the back part near the bumper il have a look and try and do it on me drive