53531-12 Flowmaster 30 Series Race Muffler - 3.50 Offset In / 3.50 Center Out - Aggressive Sound

54030-12 Flowmaster 30 Series Race Muffler - 4.00 Center In / 4.00 Center Out - Aggressive Sound

54031-12 Flowmaster 30 Series Race Muffler - 4.00 Offset In / 4.00 Center Out - Aggressive Sound

54033-12 Flowmaster 30 Series Race Muffler - 4.00 Offset In / 4.00 Offset Out - Aggressive Sound