PROMO Magnaflow 4" PRO Series Cat-Back Performance Exhaust System 2006-2007 GMC/Chevy Sierra/Silverado 3500 $494.00
PROMO MBRP 4" Cat Back, Single Side, T409, Chevy/GMC 2500/3500 Duramax, Classic, EC/CC 2006 - 2007 $624.99