Flowmaster 40 Series Delta Flow Mufflers 2.5″ ID/OD – 2005-2006 Pontiac GTO – 942544

40 Series Delta Flow Muffler, 2.50 IN (O) / OUT (O), Same Side Offsets IMPORTANT- Please note these mufflers�are sold for custom applications, and it is the customers responsibility to verify fit before purchase. It is easy to install these mufflers on some cars like the 2005-2006 GTO because the stock mufflers are 2.5, and center in/center out. It would require much more work to install them on a 2004 GTO that has offset muffllers and different diameter piping. RESTOCKING FEE APPLIES TO ALL RETURNS.