I have a 2006 standard cab/long bed LLY (or LBZ) Duramax. I replaced the stock exhaust with aftermarket at 15,000 miles and want to sell my stock cat-back exhaust. It should fit the truck listed above and a extended cab/short bed as they have the same exhaust mounting. The stock exhaust is stainless steel. I am in Michigan and prefer pick-up of this item.