North American P-51 Mustang variants

Over twenty variants of the North American P-51 Mustang fighter were produced from 1940, when it first flew, to after World War II, some of which were employed also in the Korean War and in several other conflicts. == Allison-engined Mustangs == === NA-73X === The prototype of the Mustang, designated NA-73X, was rolled out by North American Aviation on 9 September 1940, albeit without an engine, and was first flown the following 26 October.

Source: Wikipedia — North American P-51 Mustang variants (CC BY-SA 4.0)