Corvette SLP Loud Mouth II Exhaust Systems : C6 LS2 2005-2008 Is your 2005-2008 Corvette missing that awesome muscle car rumble? SLP has the solution – the Loud Mouth II Axle-Back Exhaust System. This system is good for up to 12 additional horsepower paired with a deep and powerful growl. The secret to the system's distinctive sound and performance gains are a pair of polished stainless Loud Mouth II bullet-style mufflers, stamped with our SLP logo. This system features four polished 3.5" dual split round tips, providing you with the ultimate Corvette look. The modular design gives you flexibility to change to our louder Loud Mouth® resonators (#31062). The rest of the exhaust system is hand-crafted from 2.5" 304 stainless steel, and is covered with our Limited Lifetime Warranty.