 Complete the following phrase:  A new model was not prepared in time for the 1963 season. To keep the P57 competitive, a 6 speed gearbox was mounted to the engine, which also featured a new injection system. The first race of 1963, the Monaco Grand Prix, looked to be a repeat of the previous year. Clark led from pole before the fragile Lotus broke, handing Hill the first of his five Monaco Grand Prix victories. However, problems with the new gearbox forced Hill to retire from the next two Grands Prix while Clark achieved 4 consecutive wins. Clark won 3 of the last 5 races and stormed to the championship. Hill took another victory in the 