After world war 2 south american airforces bought surplus P-51s from the americans, they used them until the 60s then my grandpas buisness partner bought 2 of them for 10 grand!! . Why my grandpa didnt buy ten i dont know..... His partner went to pick them up and flew them home on the way back he had to land at a restricted millitary base because of low fuel levels. They inspected the planes and they still had the paint jobs and ensignias of south america. The also found that the six 50.caliber machine guns were still fully fireable and wernt leaded in. fortunatly he was allowed to go home but had to lead the 50 cals in of corse. He painted them, made one a double seat and sold them for a very high price years later.