ACCEL's Truck Super Tune-Up Kit has everything you need to super-tune your vehicle – a distributor cap and rotor, a wire set, and a complete set of spark plugs. Designed specifically for 1985-88 5.0s, carbureted 1984-87 351Ws with EEC 4 ignitions, and fuel-injected 1988-97 351Ws, this kit comes with a high-performance distributor cap and rotor, 8mm Extreme 9000 wires pre-cut to exactly the right length, and a set of ACCEL copper-core spark plugs. The cap and rotor are precision-molded from an impact-resistant, high-dielectric-strength compound and have brass or copper inserts and stainless-steel contact springs. The plug wires have a low-resistance Ferro-Spiral core and are fitted with heat-reflective coated boots rated to 1,200 degrees. Race-proven, high-performance spark plugs complete the custom-designed package. The easiest, best way to boost performance, maximize efficiency, and reduce emissions for 1985-88 5.0s, carbureted 1984-87 351Ws with EEC 4 ignitions, and fuel-injected 1988-97 351Ws, this kit is easily installed and comes backed by ACCEL's famous limited one-year warranty.