Hookers new Super Competition and Competition Headers for 98??2002 LS F??bodies have all the A.I.R. and EGR Fittings deleted and are for high output, supercharged or big inch versions of the Gen III (LS??6/LS??7) engine. The Super Competition versions feature 18 gauge big tubes and a Power Spear Collector???. The big 1??7/8?? tubes combined with Hooker's unique Power Spear??? create the ideal header for competition use. Hooker's Power Spear allows exhaust gases to maintain high velocity as they enter the collector. They also divert along a straighter path in the collector, directing them to merge without excessive back pressure??causing turbulence. These features help extend and broaden the engines' torque curve.