3.5" inlet 3.5" outlet 17.5" long. EXCEPT vehicles with Dual Rear Wheels. 1) 3.5" clamp included. Adapts Borla(r) 158.9" Wheelbase systems to Crew Cab With Long Bed (8' 2") 172" Wheelbase vehicles. EXCEPT Diesel engine. 3.5" inlet 3.5" outlet 17.5" long. 1) 3.5" clamp included.. See below for additional Product Features &. Benefits. Borla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.. Borla products are constructed using T-304 stainless steel for long life and sharp appearance and feature all welded construction for maximum durability.