 Complete the following phrase:  Parkes first entered a World Championship Grand Prix at Aintree in 1959 driving a Formula 2 F2 Fry-Climax 1.5-litre Straight-4. However he did not qualify and returned to sportscars thereafter, apart from a single outing at Mallory Park in 1962 with a Bowmaker Cooper. Following his success with Ferrari sportscars, Parkes joined Ferrari officially, in 1963 as development and reserve driver, and over the following seasons became recognised as a leading sports car driver. When John Surtees unexpectedly left Ferrari in 1966, Parkes was promoted to the Grand Prix team and with an extended chassis to accommodate his height of six feet four inches, was immediately successful, finishing in second place in the 