1988 Chevrolet C3500 Submodel: Extended Cab Pickup; Engine: 6.2L V8; 2 Bolt Gasket;. 1988 Chevrolet C3500 Submodel: Standard Cab Pickup; Engine: 6.2L V8; 2 Bolt Gasket;. 1989 Chevrolet C3500 Submodel: Extended Cab Pickup; Engine: 6.2L V8; 2 Bolt Gasket;.