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Header-Back System 409S -Dual Rear Exit - American Thunder - Moderate/Aggressive
1968 to 1974 Chevrolet Nova with a V8 engine.
For the person who is looking for a complete Header-Back dual exhaust system with an aggressive tone. These 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 bent 16 gauge 409 stainless tubing
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