Developed in cooperation with Michelotto Automobili, the racing model is based on the European GT3 version of the 458 Italia but features less efficient aerodynamics as well as a detuned V8 delivering 500-horses due to the different regulations in the American series.
In addition, the Grand Am sports a modified braking system, as the car has neither ABS nor traction control.
Other differences compared to the GT3 include the strengthened roll-over bar to deal with the more frequent collisions in the American series, while the car is also fitted with Continental tires, the sole supplier to the series.