porsche 934Porsche 934 Turbo RSR. Using the 930 as a basis, the 934 RSR was a racing version of the Porsche 911 Turbo prepared to FIA Group 4 rulesTo homologate the Typ 934, Porsche’s first turbocharged, production-based racing car, for FIA Group 4 endurance racing, the Stuttgart manufacturer was required to build 400 911 Turbo street cars. Not simply a hhly successful