For 1999, Oreca's efforts were expanded further, as the team now operated in two championships: A two-car team in the new American Le Mans Series and the existing two car team already competing in FIA GT. FIA GT saw the Vipers once again sweep the series with nine wins for Oreca, and a lone win for the Paul Belmondo Viper. Chamberlain improved their team to finish second in the championship, while GLPK Carsport would be the fourth Viper squad to compete. A similar story occurred in the ALMS, with Oreca winning six races and taking that championship as well. Oreca would also earn their second straight win at Le Mans, with various Vipers finishing in the top six positions in their class. The FFSA GT Championship would see the appearance of Belmondo's Vipers, earning two victories over the season, and the 24 Hours Nürburgring would see Zakspeed claiming overall victory.