Flowtech Headers are the perfect combination of quality and value. These shorty style headers fit the popular 2005-2010 Ford Mustang 4.6L 3v V-8 models. CARB EO# D-115-28 Features: 304 Stainless Steel tubes provide consistent tubing diameters for smooth flow and increased exhaust velocity Heavy duty 16-gauge tubing for increased strength and durability Smooth transition, 1-5/8 diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response OE style 2-1/2 ball and socket collector connects to factory exhaust head pipe with no cutting or welding Premium aluminum header gaskets included Headers are a must upgrade if you are using a cold air intake, cat-back exhaust system or tuner Also available in a black and natural finishes