Sanderson Headers CS13-P: Headers, Shorty, Steel, Natural, 3 in. Collector, Round Port, Chevy, GMC, Small Block, Pair - No gaskets, please! Sanderson headers provide the only leak-free flange design that works! Their patented headers stem from over 50 years of performance. And, like your special project that you've upgraded to be better than the original, Sanderson headers are well-crafted and unique to many types of engines for many types of cars offering you the best fit for your swapped, modified, and accessorized hot rod. They're crafted from 16-gauge steel with precision, laser-cut, 3/8 in. thick flanges. A weld bead is built up and uniformly ground around exhaust ports and bolt holes to such a precise thickness, all that's needed is a bead of Permatex Ultra Black gasket maker silicone. You'll have no more worries of warped flanges and blown gaskets! Choose the style, finish, and fitment tailored for your vehicle. Sanderson handmade performance headers for your one-of-a-kind build!. Sanderson Headers CS13-P fits these applications: 1984-1997 CHEVROLET S10 , 1991-1997 GMC SONOMA , 1984-1990 GMC S15 .