The Porsche Type 997, or simply 997 is the project coe name for the current version of the sports car Porsche 911, built by the German manufacturer Porsche since 2004. Production began in July 2004 and two variants, the Carrera and Carrera S coupés, were available immediately. The all-wheel drive Carrera 4 and Carrera 4S versions began shipping in November 2005, while the Turbo and GT3 derivatives went on sale in late 2006 and the 997 GT2 in 2007. The new 530 hp (395 kW) GT2 can accelerate 0-60 mph of 3.6 seconds and has a top speed of 204 mph (328 km/h), the first production, street-legal Porsche 911 has a 200+ mph top speed. The Targa top models are also available, in Targa 4 and Targa 4S forms. The 997 is the most commercially successful 911 of all time. As of July 2007 it has sold 100,000 units since its introduction in April 2004.