Everything that you need to super-tune your pickup, van, or SUV is in these handy kits, including a custom-fit wire set, a distributor cap and rotor, and C-Cut performance spark plugs. Most kits include the 8mm Extreme 9000 wire sets, which feature a low-resistance Ferro-Spiral core and heat-reflective coated spark plug boots rated to 1,200 degrees F. Some inline 6-cylinder applications use the 5000 Series wire sets where extreme heat is not a problem. The distributor cap and rotor are precision-molded from impact-resistant, high-dielectric strength compounds and have brass or copper inserts (depending upon your application) and stainless steel contact springs. In addition, the race-proven C-Cut performance spark plugs deliver maximum burn efficiency for improved performance and reduced emissions.