Borla 19-22 RAM 2500 6.4L V8 AT 2/4WD S-TYPE Cat Back Black Chrome TipsThis 3. 5" diameter BORLA Cat Back system utilizes the factory transition pipe between the catalytic converters and the muffler so that it will fit ALL Cab and Bed configurations. EXCEPT vehicles with Dual Rear Wheels. The system is made to give you the best performance, sound and durability possible. It utilizes high quality T 304 stainless steel, superior to T 409, for durability, mandrel bent pipes for high flow, and precision computer numerical