 Complete the following phrase:  In 1969 Tony Southgate moved back to the UK and took a job as Chief Designer for the BRM Formula One team. Southgates first BRM car, the BRM P153, appeared in time for the first race of the season in South Africa. BRM enjoyed a renaissance with the P153 and its successor the BRM P160. The P160, in particular, was highly competitive during the season; drivers Pedro Rodríguez and Jo Siffert often ran near the front of the field, only for poor reliability to let them down before the finish. Continued development work reaped vast improvements. In the latter half of the season Siffert and Peter Gethin who had replaced Rodríguez following the latters death won back-to-back victories in the 