Ford Windsor SBF Edelbrock Performer Intake Manifold Chrome Plasma ED7121-CPIntake Manifold, Performer RPM, Dual Plane, Aluminum, Chrome Plasma Coated, Square Bore, Ford, Small Block, Each Intake Section Included: Complete Engine Block Deck Height: Standard deck Carburetor Quantity: One Intake Style: Dual plane Basic Operating RPM Range: 1,500 6,500 Intake Manifold Height: 4. 900 in. Intake Color: Chrome plasma coated Intake Material: Aluminum EGR: No Quantity: Sold individually. Edelbrock Performer RPM Intake Manifolds