Race-proven performance and a powerful deep muscle-car sound to match, with a PowerFlo Exhaust System from SLP Performance Parts. This exhaust system includes a pair of our PowerFlo mufflers and Loudmouth II muffler, which use a straight-through design and ceramic-wrapped perforated core to significantly outflow traditional chambered and turbo-type mufflers. Combined with our Dual-Dual slash cut polished tips, you'll really feel and hear the difference! Mustang 4.6L 1999-2004 Constructed entirely from stainless steel Hand-polished mufflers and tips provide a show quality appearance