Solo Performance Cat Back Exhaust Kit for Pontiac G8 V8 Models Mach 2008 - 2009 Pontiac G8 GT & GXP Cat Back Mach All Stainless steel Piping With T304 Polished Stainless Steel Dual Round Tips Incorporated J pipes to reduce drone Easy Bolt on Design. All parts included for insallation Free Tee shirt with every order. Sm, Med, Lg, XL , 2XL & 3XL available. PM us your size when you order or we will include an XL.