Edelbrock Part # 7524 Dual-Quad HEMI intake manifold is intended for use with Mopar Gen II (1964-71) 426-572 HEMI engines operating in the 2,500 to 6,500+ range. This new intake manifold is a single-plane Air-Gap design with a dual square-bore 4150 style carburetor pad. Carburetor spacing and height are the same as Mopar Performance dual-quad #P5153737, making it a direct bolt-on to all vehicles with a shaker hood. They also retain the same carburetor linkage location from the factory. The Dual-Quad HEMI is compatible with factory style cylinder heads, but optimized for use with Edelbrock Victor Jr. HEMI cylinder heads. Requires Edelbrock Coil Bracket #8079 for use with OE style coils.