Mr Gasket 208APerformance Intake Manifold Gaskets Application: Big Block Ford 429 CJOval ports 2.23 x 2.60 inch Features: Manufactured from cellulose/nitrile composition gasket material.Provides excellent sealing and durability.Can be trimmed if necessary for modified port applications.Complete with manifold end seals and distributor gasket where applicable.For OE replacement, high performance street, drag race and oval track use.