Hi, another question of ''The Return of Power" period: In 1966 Kish Probert tried, and 1967 participated, at the Grand Prix of Rhodesia in a Cooper-Borgward T51. The car seemed to be an upgraded 1957 T43 and the engine a highly tuned Isabella TS touring car unit of unknown horse power. Other sources suggest a full racing RS motor, like Helmut Menzler used some years before. It definitely wasn't the same machinery.