Performance Manifold - M8 - 55mmCaracteristicas: Replaces stock, plastic manifold Must have for big bore engines Includes new rubber seal High Flow, adds 3 5 hp Easy to install T6 heat treated cast aluminum For closed course competition use only. Not intended for street use. Legal in CA only for racing vehicles which may never be used, or registered or licensed for use, upon a highway. Not legal for sale or use nationwide on any federal pollution controlled motor vehicle under the