The 9ff GT9 was replaced by the GT9-R, offering up to 1,120 bhp (840 kW; 1,140 PS). It was designed to take the speed record for a street legal car, with a claimed speed of 414 km/h (257 mph).
It does 0–100 km/h (62 mph) in 2.9s and 0–300 km/h (190 mph) under 16s. As with the original GT9, only a limited number of GT9-Rs were produced and only 20 with the largest engine.
Source: Wikipedia, 2014