Not the P-80 or its successors, but that's not a bad guess. Here's a bonus clue, and I have also edited Clue 3 by specifying the number of letters in the answer to that clue. It's still not easy, but I fear it was close to impossible without an idea of length.
Looking for the name of a very well-known warbird, which I think hasn't come up in one of these quizzes yet.
1. Flown by more than 20 countries.
2. In service somewhere for well over 50 years.
3. That woman objectively embraces a mixed up oddball (6).
4. Crew of one, but some later variants had a second seat.
5. Some of them dropped leaflets on one occasion.
6. It was designed to use a particular engine, an engine that powered a number of well-known airplanes and at least one car.
7. Its engine was originally designed to power a bomber.