2004 GTO SLP Exhaust System, "Loud-Mouth" w/PowerFlo-X Crossover Pipe , shipping is not included. Looking for the ultimate GTO cat-back system? SLP's new GTO Loud Mouth employs an integral X-pipe crossover and specially designed "Shotgun" race resonators to provide superior flow and performance, while minimizing interior drone. The resulting tone is deep, rich, and powerful--the consummate fusion of muscle-car aggression and grand-touring civility. Like all SLP exhaust systems, the GTO Loud Mouth is hand-built from 100 percent stainless steel and carries a limited lifetime warranty. Features * Constructed entirely from mandrel-bent 304 stainless steel (2.5" OD) * Equipped with an integral X-pipe crossover for optimum performance and sound quality * Custom-designed "Shotgun" race resonators provide virtually unrestricted exhaust flow * Exclusive modular design allows easy interchangeability between resonators and SLP high-flow mufflers * Features two hand-polished, double-wall tips * Designed to OEM standards of fit and durability * Covered by SLP's limited lifetime warranty * Priced significantly less than competitors' stainless systems