OPS engines are still made today (2022) by Mantua models Italy. Parts for 60 size marine OPS is also available from same source The boat in your picture is the European endurance (1 hour) FSR-60 boat. The head -air cool ribs, was with cooling ring. Trivia info: OPS was a collaboratin of "Officina Picco-Sauter" that ended when Picco made his own engine comany.