Designed for 340-360 c.i.d. Chrysler V8s and 318 c.i.d. engines with 340-360 cylinder heads. Latest technology in dual-plane design results in both excellent low-rpm torque and outstanding high-rpm horsepower. Recommended for high-performance street, strip and fresh water marine applications. Accepts early-style waterneck only. Will not accept stock Thermo-Quad carburetor. Will not fit 1992 and later Magnum engines.