The team regrouped with Tony Southgate as designer and Rodríguez brought back into the fold to partner Oliver, and gained its first V12 victory when Rodríguez won the 1970 Belgian Grand Prix in a P153, with further victories for Jo Siffert and Peter Gethin in 1971 in the P160. The team had reached one of its intermittent peaks of success. Sadly both Siffert and Rodríguez were killed before the 1972 season and the team had to regroup completely again. Their last World Championship victory came when Jean-Pierre Beltoise drove a stunning race to win the rain-affected 1972 Monaco Grand Prix with the P160. He also won the non-championship 1972 World Championship Victory Race later in the year. The campaign was generally chaotic: having acquired major sponsorship, Louis Stanley originally planned to field up to six cars (three for established drivers, three for paying journeymen and young drivers) of varying designs including P153s, P160s and P180s and actually ran up to five for a mix of paying and paid drivers until it became obvious that it was completely overstretched and the team's sponsors insisted that the team should cut back to a more reasonable level and only three cars were run in 1973 for Beltoise, Lauda, and Regazzoni.