[rheavn]

This muffler has an offset 5" inlet & an offset 6" outlet. It is an order item from Newell. It is manufactured by Riker Products. Newell's part number is 20072. Riker part #8WK LD. Price from Newell is $869.56+ S&H. This is a direct replacement for a 1999 with a Detroit. I suspect it will fit any DD Newell, but you will need to verify. I have attached a picture of my muffler so you can evaluate if yours is the same.