Porsche have unveiled their new for 2013 GT3 Cup Car. Based on the new generation 991 chassis, it replaces the 997 GT3 Cup cars. The new 991 GT3 Cup Car will at first only be used in the Porsche Mobile 1 Supercup (F1 Support Race) before been used in national Carrera Cups the year after. The new car produces 454BHP from its 3.8 Flat six, sends its power through a paddle shift 6 speed sequential box and weighs 1,175kg. This is the first of the new generation race cars to come from Porsche with them still to unveil a GT3R and a GT3RSR for multiclass racing.