Extreme Duty Twin 4" Turbo Back Exhaust w/ Resonator - 79 Series Dual CabBuilt for serious off roading and featuring an unmistakable note, our Twin 4 inch turbo back exhaust is engineered to transform your 79 Series into a whole new animal. Product Specifications: 4" Twin Turbo Back System Fits factory and upgraded turbos with its oversized inlet Without Catalytic Converter With Resonator Assembly Adjustable Tail Pipes for Accessory Clearance Suits Dual Cab Models Features and Benefits: Australian Designed and Made 10 Year