In 1963, Geoff Clarke; the owner of Motor Racing Stables, moved his racing school to the Brands Hatch circuit. This brought him in contact with John Webb; managing director of developments at Brands Hatch. At about this time, two of the school’s Lotus Formula Junior chassis were fitted with a standard 1498cc Ford "Kent" pushrod engine as featured in the recently introduced Cortina GT saloon. The 1500 Cortina, with its reliability and horsepower output fairly close to “F3 proper” proved a resounding success in the school. The earliest experiments with radial tires bore fruit as well: the students of the day did not care that these were not the racing engines or racing tires, just that the cars were equal.