1968 Chevrolet Corvair Sprint Convertible For Sale or Trade This is a rare Corvair, equipped with a powerful 140 HP engine. The Corvair Fitch Sprint was a set of modifications for the Chevrolet Corvair automobile developed by racing driver John Fitch. John Fitch was given the opportunity to test several models of the brand new Corvair and he then set out to develop various engine, chassis and body modifications. John decided to market these modifications and the Fitch Sprint was born. Sprints were available in three different flavors. A customer could have his new Corvair drop shipped to Fitch’s Falls Village shop and have Fitch’s mechanics install the Sprint kit options desired. Or, the Sprint kit could be installed by a local Chevrolet dealer who is authorized by Fitch to install the Sprint kit. Fitch recalls that more cars were converted at dealerships than at his shop. And lastly and most popular, you could mail-order the kit and options you desire and install the Sprint kit yourself.