Pacifica Performance (MAC's sister company) offers us this wonderful piece of equipment to make your mustang sound like the ultimate Muscle Car! Improve your Mustang with an aggressive tone and gain horsepower the moment you install this system. The kit comes with straight through Boomtubes with perforated baffling on the inside. This system comes complete with all hardware and is a direct bolt on. System includes 3.5" Stainless Steel Tips!! All these catbacks are a direct fit to to stock catalytic H pipes, any aftermarket off-road H-pipe or Pro Chambers.