According to Paul Coggans’ Mustang Survivors book, the Fuerza Aérea Dominicana (FAD) was the last operator of Mustangs as frontline fighters, retiring them in the mid 80s.

The Phillippines Mustangs were replaced by 50 F-86 Sabres in the late 1950s, but some were still in service for COIN roles up to the early 1970s.

http://en.wikipedia.org/wiki/North_American_P-51_Mustang#Non-US_service

Otherwise, excepting aircraft flown for commemorative or testing purposes, I think you are now looking only at the C-47 family.

Regards,