American Thunder Kit Cat back, Exhaust, Kit, Chevrolet, GMC, Truck, Performance Cat-back 409S 96-99 GM 1500 Cat-back System 409S - Dual Rear/Side Exit - American Thunder - Moderate Sound Cat-back System 409S - Dual Rear/Side Exit - American Thunder - Moderate Sound - 1996 to 1999 Chevrolet Silverado and GMC Sierra 1500 trucks Exhaust System Kit Fits 1996 to 1999 Chevrolet Silverado and GMC Sierra 1500 trucks with a 5.7L V8 engine using dual catalytic converters, fits Extended Cab and short bed configuration. For the person who is looking for a complete Cat-back dual exhaust system with an moderate tone and a choice of dual rear or side exit configurations. With easy fit in mind, these American Thunder systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. With Dual Catalytic Converters. Extended cab/Short bed.
