Every header is tuned with the proper tube size and length to efficientlyremove all the exhaust from each cylinder reducing pumping losses for dramatic gains in horsepower and torque. Dougs headers are carefully developed on the vehicles they are i ntended to fit and are checked and rechecked numerous times during the design and manufacturing process. Once you check the heavy-duty 1/2 to 5/8 thick machined and finished header flanges the smooth mandrel bent tubes and the attention paid to assemb ly youll want Dougs.The Metallic Ceramic Thermal Barrier Coating (MCTBC) is simply the best header finish on the market and is the standard finish on all Dougs headers
