Actually, the previous generation GTS-R WAS the race version of the GTS. The current name for the racing verion of the new viper is the Viper Competition Coupe. The name for the street-driven coupe version is the Viper SRT-10 Coupe. The GTSR Concept in the game was a concept showing the general design of the new-generation Viper before the SRT-10 roadster was ever shown. The GTS-R concept came out years ago and was definitely never raced. However, it does bear a striking resemblance to the new club-racing version of the current Viper. But the fact remains that the GTS-R concept in the game was NOT a race car, was never raced, and was in fact a concept for the current generation street-going Viper. BTW, you can't go in and buy a GTS-R, because it doesn't exist. There is no more "GTS", unfortunately.