The Porsche 911 GT3 was introduced in 1999 as a high performance version of Porsche's first version of the 911, the 996, to continue the quarter-century tradition of low-weight RS models that ended with the 993 RS. The GT3, named after the FIA GT class it was intended for, did not use the rather simple engine of the regular production versions of the 996, but a naturally-aspirated version of the turbocharged Porsche 962 and Porsche 911 GT1 race cars. Later, the turbo-charged Porsche 911 GT2 was added to the maker's lineup, but unlike its predecessor 993 GT2, did not fit into GT racing regulations. The racing versions of the GT3 have won several major 24h races outright, and mainly dominated their class at Le Mans.