Doug's Headers Full Length Headers 2" Primary 3.500" Diameter Collector Steel - Ceramic Airflow Research (AFR) 3/8 in ID Axle Hole

3/8 in ID Axle Hole

MAC-1X Helmet Air Pumper

Side A is AN-08

ensuring a straight rear end while eliminating inconsistent spring rates

Doug's Headers Full Length Headers 2" Primary 3.500" Diameter Collector Steel - Ceramic Airflow Research (AFR) 3/8 in ID Axle HoleProduct Description: Headers Full Length 2 in Primary 3. 5 in Collector Steel Ceramic Big Block Chevy GM F Body 1967 69 X Body 1968 74 Pair Dougs Headers, the most respected name in the header industry since the 60s, began in 1958 as a small muffler shop in East Los Angeles, California. Every Dougs header comes with all the necessary mounting hardware, collector reducers or connector pipes, premium gaskets and detailed installation instruction sheets.