The Dodge Viper GTS '99 is a Road car produced by Dodge. It appears in all Gran Turismo games to date since Gran Turismo 2.
In-game description
This description is taken from the description page in GT5. It is transcluded from here.
GT5 Transcripts/Dodge Viper GTS '99
Acquisition
GT2
This car can be bought in the Dodge Dealerships for 75,410 Credits. In addition, this car is unlockable in arcade mode. The player must win a race in Seattle Circuit at normal level or higher to unlock this car. In Arcade Mode, this car is classified as a S-Class Car.
GT3
This car can be bought in the Dodge dealerships for 78.680 Credits.
GT4
This car can be bought in the Dodge Legendary Car Showroom for 78,000 Credits.
GT5
As a Standard car, the Dodge Viper GTS '99 can be purchased from the Used Car Dealership for 66,911 Credits. It is a Level 9 car.
GT6
This car can be purchased for 78.000 Credits. It is a simplified car.