to be honest, I had never heard of the F-20 and after some research I found out why. seems the F-20 was in competition with the F-16 to become a mainline fighter. the tigershark lost out in an apparently very close competition. politics became involved and Northrup did not press the issue even though their fighter was in many ways superior to the F-16. turns out they did not want to jeopardize their contract for the B-2 spirit bomber. Wikipedia sites sources as saying that this was the best fighter never put into production. as for the model.....it is very good. no fit problems, good cockpit, good landing gear. comes with a pilot.it is devoid of weapons except for a couple of sidewinders on the wing tips. I replaced the 3 fuel tanks with 2 mavericks, 2 gbu-12 on the wing pylons and a mk 82 center line, all from hasagawa weapons kits. highly recommend