Keith Dorton is a world-renowned circle track engine builder who is noted for the extraordinarily successful engines that his company builds, including NASCAR winners. He's also deeply involved in many R & D projects for many of the major original equipment companies. Keith builds extraordinarily successful engines because he thoroughly understands the intricacies of engines and fuel systems; he's careful, methodical and devotes the necessary time and effort to do a job right the first time. For this reason he was approached by Holley to help develop a family of two and four-barrel racing carburetors that would have no peers. The Keith Dorton Signature Series is no ordinary line of race carburetors. These carburetors were planned in detail from the outset. Then they were carefully developed, dyno-tested and track-tested by Keith Dorton and Holley to be the epitome of circle track racing carburetors. Relying on his years of hands-on experience and technical expertise, Keith Dorton has accomplished his task in admirable fashion. Race ready out of the box, Keith's carburetors are designed for bolt-on-and-win performance.Pit Stop USA offers Holley Keith Dorton SiGNature Series Carburetor - 500 CFM Two Barrel - Model 2300 HP 0-80583-1 at low everyday prices. Be sure to check out all of our products from Holley Performance Products including Holley Performance Products 2BBL Gasoline Carbs.