 Complete the following phrase:  Parnell continued to run a 2.1-litre P261 for Chris Irwin and Piers Courage during the subsequent 1967 Formula One season, and Bernard White ran another for David Hobbs at the British and Canadian Grands Prix. However, with the P83 now the main works car, the Bourne works team only fielded a P261 twice in the World Championship, although Stewart did manage third place at the 