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 increases power to 341hp, combined with rear wheels power wheels, a standard 6-speed manual and sport suspension and limited-slip differential included.