Wanted - Exhaust Backbox

I am looking to change the custom powerflow system as it is just too noisy and go back to standard centre with AM backbox. Does anyone have have something for sale, must be in good condition. Out of interest what is the standard backbox like does any one have a picture they can post?
Thanks
Mark

I managed to get an exact copy of the OEM one for about £25 brand new from eBay. The exhaust tip points in the right direction too.
http://i35.photobucket.com/albums/d1...3/IMG_1110.jpg
http://i35.photobucket.com/albums/d1...3/IMG_1111.jpg

Thanks for that
Mark