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If your Fox-body didn’t have Flowmasters on it, it wasn’t modified. That trend continues today with Flowmaster [(800) 544-4761; www.flowmastermufflers.com] and its new axle-back system for the latest generation of ’05-’08 Mustangs delivers improved performance, looks, and a sound reminiscent of those early 5.0L cars. Featuring classic square cased 40 Series mufflers, the kit follows the factory exhaust routing, utilizes the factory hanger mounting points, and includes all necessary mounting hardware for an easy and perfect fitment. Flowmaster also offers quieter options featuring the American Thunder Classic System for the 4.6L GTs as well as the 4.0L V-6.