If you're looking for the best-flowing, meanest-sounding Cobra cat-back in the business, you've come to the right place. SLP's legendary "Loud Mouth" systems employ our specially designed resonators instead of traditional mufflers, allowing them to offer both unmatched power increases and a wicked "race-ready" sound. You'll feel and hear the difference! Features Added a consistent 25 RWHP on our stock '03 Cobra test car (modified vehicles will see considerably larger increases) Uses SLP's "Shotgun" race resonators for minimal flow restriction and the ballsiest sound around Dyno-proven to outperform competitive resonator-type exhausts Engineered and built to OEM standards to ensure proper fit Constructed entirely from mandrel-bent stainless steel Hand-polished, double-wall tips (3.5")--an SLP exclusive! For 1999-2004 SVT Cobra models