Not surprisingly, when you’re about to fly an airplane with more than enough torque and P-factor to roll you inverted in a heartbeat, malicious stall behavior and the ability to blow through the 250-KIAS-under-10,000-foot speed limit and laugh, the FAA and insurers are going to have something to say about it.
For single-seat fighters, the only flight training available that we found was in some P-51s modified with dual controls and that are owned by individuals (or companies) that give dual in them as part of their business, such as Stallion 51 (www.stallion51.com) in Florida, and within the Commemorative Air Force (CAF). There are private organizations and museums that give dual in the DC-3—we did not find any training available outside of museums for other transports and any of the bombers.