Shelby's 427 FE Dual Plane Intake provides a superior breathing induction path for high performance street power. State of the art constant cross sectional area runner design boost low and mid-range power, yet delivers breathing for top end power up to 6500 rmp thanks to its large volume plenum. Carburetor mounting pad is a square bore configuration and manifold is not equipped with an exhaust crossover passage. This intake fits Shelby FE aluminum heads and 390/406/427/428 factory cast iron FE heads.