Holley Universal Carburetor Installation Kit 20-124 | The kit contains all the hardware necessary for most installations of a new 4 bbl carburetor including: mounting studs (including an extra long one for securing throttle cable / kick down cable brackets), washers, nuts, air cleaner stud, vacuum caps, 3 different throttle cable balls, bushing Adapter for large hole of throttle lever, air cleaner gasket and base gaskets for square and spread bore carbs.