Chevy Silverado/GMC Sierra 1/2 Ton 1988-98 Headers - Stainless steel headers with 1-7/8'' primaries. Factory Connect has a Y-pipe that fits to factory connection point. Our Performance Connect sports an X-pipe and is designed to fit SW exhaust for maximum performance. Also available in headers onl with 3'' slip flit collectors and no tubes. For 4WD extended cab short bed, 1500,. (142'' W.B.).