There were two Costin brothers, the younger teamed up with Mike Duckworth and together they founded Cosworth Engineering which created performance engines, including those that won several Formula One World championships. His elder brother Frank Costin also worked at de Havilland Aircraft and was persuaded by Mike to design the body for the Lotus VIII. Colin Chapman had been asked by Tony Vandervell to engineer a Formula One Grand Prix car, and Chapman engaged Frank Costin to do the body design; this car entered as the Vanwall, won the very first Formula One Grand Prix Constructors Championship in 1958. Frank did other designs for Vanwall. Frank tended to moonlight on projects rather than be directly employed, and at Lotus he collaborated on the design of the Lotus Elite to improve its aerodynamics, as well as worked on the Lotus Nine and Eleven. Frank Costin also worked with racing teams such as Lister, clothing the Lister-Jaguar 'Knobbly' with an aerodynamic body to produce the Costin-Lister for 1959. In 1959 Jem Marsh and Frank Costin formed Marcos cars and the first model used a plywood chassis built with the same techniques as the de Havilland Mosquito aircraft which both the Costin brothers had previously worked on. After leaving Marcos, Costin's consultancy produced many cars using the plywood chassis construction, but most of these were one offs. However the 1968 Costin-Nathan did get to a production of six cars, and the 1971 Costin Amigo achieved nine units. There was a wooden Formula Two car called the 'Protos' which had a canopy over the driver, and the 1971 March 711 had a Frank Costin body and a Mike Costin Cosworth engine at the back.