Cut off from my gs500f bike at around 500-1000 miles. I replaced it with a custom flange and yoshimura exhaust.
I've listed it on ebay here:
http://cgi.ebay.com/ebaymotors/Suzuki-GS500F-GS-500-Exhaust-Muffler-04-09-/110644722331?pt=Motorcycles_Parts_Accessories&hash=item19c2f07a9b#ht_500wt_1182