I know these aren't for a diesel application necessarily but I have a pair of 3 inch offset inlet/ 3 inch center outlet full stainless mufflers. They are the Borla PRO XS series mufflers. They are about 9 months old. Selling the truck that they are on and putting the OEM muffler back on it. Paid $200 for the set, will sell for $100 + shipping.