the F430 GTC is a racing car designed to compete in international GT2 class competition, such as in the American Le Mans Series, Le Mans Series, and FIA GT Championship. F430 GTCs also compete at the 24 Hours of Le Mans. The GTC was the fastest and most developed racing version of the F430. In FIA GT2 championship, in order to render the car performances more uniform, the cars are forced to run with a specific minimum weight and with an engine restrictor that depends on the engine displacement. Hence Ferrari destroked the 4.3 L V8 engine to 4.0 L in order to compete in the 3.8–4.0 L class in GT2 class racing, which is allowed to race with a minimum weight of . In this race configuration, the engine produces somewhat less power () and by using the 4.0 L engine, the minimum weight of the F430 would increase by . but this is compensated by the reduced weight of the car, which yields a better power-to-weight ratio. The F430 GTCs won their class championships in the ALMS and FIA GT, as well as scoring class wins at the 2007, 2009 and 2010 12 Hours of Sebring, at the 2008 and 2009 24 Hours of Le Mans and at the 2008 and 2009 Petit Le Mans. F430 GT3 Originally based on the F430 Challenge, the F430 GT3 is a specialised racing car developed in 2006 by JMB Racing for the FIA GT3 European Championship and other national GT championships such as British GT and FFSA GT. It is mechanically similar to the F430 Challenge but has better-developed aerodynamics and more power. The car uses the same 4.3 L V8 engine, tuned to produce , making the GT3 more powerful than its GT2 counterpart. However, due to the GT3 regulations stating that the car must have a power-to-weight ratio of around 2.6 kg/hp, the car weighs in race trim (driver and fuel excluded), which is roughly more than the GT2 spec car. Despite the higher power, it is significantly slower than the GT2 version; for example, in the 2007 Spa 24 Hours endurance race, in which both models were entered, the GT3 spec vehicles' best qualification time was around 8 seconds slower per lap than that set by the GT2 spec vehicle. 430 GT3 Scuderia Developed by Kessel Racing for the 2009 season, the 430 GT3 Scuderia is the successor