Lotus was commissioned by Ford to turn their Cortina saloon into a winner both on the track as in rallies. Colin Chapman and his men extensively modified the Cortina. The straight 4 engine derived from the Anglia powerplant was bored out and fitted with a special crankshaft and fed by twin Weber Carburetors. The suspension was modified as well.The result was the almost unbeatable Lotus Cortina scoring many road racing victories at the hands of the greats like Jim Clark.