This high-quality throttle-linkage system is sold as a kit and comes with rubber insulator bushings, nylon insert bushings, a cotter key, spacing washer, return spring, 12-1/2-inch carburetor to pedal rod, and a carburetor to linkage cap. This upgrade kit is an improved reproduction of the original throttle-linkage system. Made from higher quality materials, the parts in this kit have added strength and durability for a longer lifespan. This kit is easily installed on any 1964-1967 Mustang equipped with a 289 engine and a 4 barrel carburetor. Simply remove your old parts and replace them with these brand-new components.