Cometic Street Pro GM Gen-5 L19 454 Big Block Bottom End Gasket KitCOMETIC StreetPro Kits cater to the budget minded street rodder who is looking to purchase a kit with all necessary gaskets and seals needed for their rebuild. Quality gasket materials are a priority in StreetPro kits. Kit materials include: MLS, AFM, Aramid Fiber, and Armor Clad. This Part Fits: Year Make Model Submodel 1991 1993 Chevrolet C1500 454 SS 1991 1992 Chevrolet C1500 Cheyenne 1991 1992 Chevrolet C1500 Silverado 1991 1992 Chevrolet C1500 WT