92-95 GMC Chevy Truck SUV 5.0L 5.7L 305-350 Stainless Steel Exhaust Header 89 90 91 92 93 94 2 pieces (Gaskets are included) 1.75" Inlet, 2.5" Outlet Gain More performance Due to More Air Flow. Increase Horsepower and Torque Mandrel bent tubing, CAD-rendered, CNC Machined Flanges. Utilizes factory 02 sensor position