STC currently defines one category, GT Sport, wich have an annual team champion per Cup, Blue or Black.

The category is based on production road car designs, which must be produced in a minimum quantity of 25 examples to qualify. These cars may undergo significant modifications from the road model they are based on, allowing the use of exotic materials, better aerodynamics, larger brakes, wider tires and larger engine admission restrictors.

The FIA defines a GT car as "an open or closed automobile which has no more than one door on each side and a minimum of two seats situated one on each side of the longitudinal centre line of the car; these two seats must be crossed by the same transversal plane. This car must be able to be used perfectly legally on the open road, and adapted for racing on circuits or closed courses."

GT SPORT

Porsche 997, Ferrari F430 or BMW with its famous M3 GTR take on less known cars such as the Spyker C8 Spyder GT2R and the Marcos MarcoRelly GTS. Though the engine is smaller they still manage to produce up to 500 bhp with top speed not far from the higher class.

List of the available cars:

STC GT CLASS
ASTON MARTIN DBRS9
AUDI R8 GT
BMW E92 M3 GTR
BMW Z4 GT
CORVETTE C6R
DODGE VIPER
FERRARI F430
FORD GT
GILLETE VERTIGO
LAMBORGHINI GALLARDO
MARCOS MARCORELLY GTS
MORGAN AERO
MOSLER MT900R
PORSCHE 997 RSR
SALEEN MUSTANG
SEAT CUPRA
SPYKER C8 SPYDER GT2R
SUNRED SR21
ULTIMA GTR
VOLKSWAGEN SCIROCCO 24HGT