Bien Hoa had many vintage aircraft going to rot the last time I was there.
Considering the capability of most Historic Aircraft Restoration operations....I an sure quote a few of them could be made airworthy again with enough money thrown at them.
Buster....just so you know...there are Japanese, French, and Vietnamese Land Mines laying about.
I managed to land a Chinook in such an area a bit west of Saigon in an area known as "The Pineapple".
One of our Army Artillery bases had such a minefield that was present when American units took up operations at the former Japanese/French/Vietnamese site.....with the previous occupants failing to leave the maps to their mine fields.
US Forces used surface mines called Claymores that were either detonated by a soldier or by trip wires.
Key point is they were above ground and removed or used.
The NVA and VC left many land mines and IED's scattered about.