Professional Products 55025 Chrysler, Dodge, Plymouth, 318, 340, 360, Magnum, intake manifold. Features a polished finish. The Mopar small block Crosswind intake manifold features an air space under the plenum chamber which allows air to pass through, the plenum chamber which allows air to pass through, keeping the incoming fuel/air charge cooler than is possible with a conventional design manifold. The manifold has two sets of bolt holes. One set is for the conventional early style engines and the second set is for the Magnum engines. This manifold will work on Magnum engines or Magnum heads one early style engines. Special finishing plugs are provided to attractively cap of the unused bolt holes. Features nitrous bosses, plus an extra water port at the rear of the manifold. Power band is from 1500 to 6500 rpm. TECH NOTES: Concerning 318 cubic inch, will fit only 1967 and newer 318 and Magnum. Will not fit older 318 engines. Professional Products 55025 Crosswind Chrysler 318 340 360 Magnum polished intake manifold 55025 We offer the entire lineup of Edelbrock, Weiand and Professional Products intake manifold for Chrylser big and small block engines. Check them out! We offer the largest selections of Holley, Edelbrock, Demon and Professional Products carburetors on the web! Check them out! We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page. PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.