Cometic Chrysler 7.0L Gen-3 Hemi 4.200 Inch Bore .072 inch MLS Head Gasket LHS Drag PakThe HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block. This Part Fits: Year Make Model Submodel 1963 Chrysler 300 Base 1963 Chrysler 300 Sport 1970 1971 Dodge Challenger Base 1970 1971 Dodge Challenger R T 1969 1971 Dodge Charger 500 1966 1971 Dodge Charger Base 1969 Dodge Charger Daytona 1967 1971 Dodge Charger R T 1969 Dodge Charger SE 1971 Dodge