Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions Product Features:Fel-Pro performance intake manifold gaskets have been tested with virtually all aftermarket cylinder head and intake manifold combinations.Performance intake manifold gaskets designed without a metal core, to allow engine builders to trim the gasket for exact fit on modified ports.1970-82; w/2 Bbl. Cylinder headsPrintoseal elastomeric sealing beads to provide extra sealing strength around the intake port.Not intended for use in emission controlled vehicles.