Borla 140045 S-Type True Dual Cat-Back Exhaust System Fits 03-08 350ZExhaust System Kit S Type True Dual Cat Back Exhaust System S Type True Dual Cat Back Exhaust System; 2. 25 in.; Incl. Connecting Pipes Muffler Hardware 4. 5 in. Long Single Round Rolled Angle Cut Phantom Tips; Split Rear Exit; SPECIFICATIONS: Exit Position: Split Rear Exit Style: Straight Inlet Inside Diameter: 2. 250 in. Material: T 304 Stainless Steel Muffler Type: Turbo Outlet Outside Diameter: 2. 000 in. System Type: Cat Back Tail Pipe Diameter: