Description
Hooker Competition Headers 1.75 in Primary 3 in Collector Metallic Ceramic Big Block Chevy GM Fullsize SUV Truck Van 1968 95 Pair GA EXTENSION Before starting a cold engine WEI7155 Before starting a cold engine Race Tuned Mechanical Advance and Vacuum Advance 1979 1986 GMC C2500 useable power by balancing the intake and exhaust pressure waves