Sportscar 50s Mod includes iconic Sportscars from that era.
Aston Martin DBR1, Jaguar D-type, Ferrari 250 F.
Porsche 550 is also there in BETA, its not a finished car model.
Especially the interior on these cars ( cockpits) and sounds is some of the best I have seen in rFactor, The download also have setups for the 4 cars which I have made since the defaults are a bit strange...
Video : how the cars looks and sounds.