To commemorate the 40th year of 911 production, Porsche built 1963 of the 40th Anniversary Porsche 911 Carrera for model year 2004. Painted only in a GT Silver Metallic finish, with a dark gray leather interior, the 40th Anniversary (or 40 Jahre in German) took the base model 996 Carrera and added the front fascia of the 996 Turbo, side skirts and luxury features for the cabin – including a luggage set that matched the special grey leather interior. Mechanically, the X51 Powerkit pushed horsepower to 341, driving the rear wheels via the standard 6-speed manual, while a sport suspension and limited-slip differential put that power down a bit more effectively than the standard car.