Gibson Performance 316521 Cat-Back Dual Split Exhaust System Fits 07-08 PacificaExhaust System Kit Cat Back Dual Split Exhaust System Cat Back Dual Split Exhaust System; Aluminized; 2. 5in. Tubing; 4x9x13in. Oval Body; 2. 5in. Offset In Center Outlet; 4in. Dual Wall Slash Cut Tips; Dual Split Back; SPECIFICATIONS: Exhaust Type: Cat Back Exit Position: Single Rear Inlet Inside Diameter: 2. 500 in. Material: Aluminized Muffler Body Length: 13. 000 in. Tail Pipe Diameter: 4. 000 in. Tip Diameter: 4. 000 in. Tubing Diameter: 2. 500