Royale Monza Owners Club RMOCI, Vauxhall Royale & Opel Monza Owners Club Int., Dedicated Club for the large coupes Opel Monza Series one two & GSE and Vauxhall Royale, car details, events, joining information, members area. The Royale Monza Owners Club Int. ken an RMOCI member Please wait a moment, the Web Site is being loaded...