Yenko Chevrolet was a Chevrolet dealership located at 575 West Pike Street in Canonsburg, Pennsylvania. Operating between 1949 and 1982, the dealership is best known for selling customized muscle cars in the late 1960s.Referred to today as Yenkos, they are among the most collectible 1960s vehicles.fter Durant folded in 1932, Yenko opened a Chevrolet dealership in Bentleyville in 1934. In 1949, Yenko opened a second Chevrolet dealership in Canonsburg. In 1957, Frank's son Don took over the dealership. Known for his modified Chevrolets, Don ran the dealership until 1982, at which time he sold the business.