North American Mustang Mk.IV/P-51K Mustang (1/48 Scale) Plastic Military KitDescription: As the North American Mustang was developed as a direct result of a British Air Ministry requirement, it is somehow fitting that the RAF and Commonwealth air forces used the aircraft extensively during WWII. The British designation for the later P 51D version was Mustang IV, with the Dallas built P 51K, which used a different Aeroproducts propeller, referred to as the Mustang IVa.