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追記で　ソースとしては弱いがF-2の英語版では

Production
Work started in the FS-X program, initially given the company designation Mitsubishi SX-3.[12]
In 1984 General Dynamics had offered an enlarged version of the F-16 to the US Air Force and considered entering it as a low cost
alternative in the Advanced Tactical Fighter competition. Neither came to fruition, however this concept became the starting point for
F-2 development. The F-2 used the wing design of the F-16 Agile Falcon, but much of the electronics were further updated to 1990s
standards. Japan selected the fighter to replace the F-4EJ and supplement the F-15J, its main air superiority fighter. The program
involved technology transfer from the U.S. to Japan and vice versa. Responsibility for cost sharing was split 60% by Japan and 40% by the
U.S.[13] Lockheed Martin would manufacture all the aft fuselages and wing leading-edge flaps and eight of the ten left-hand wingboxes.

アジャイルファルコンの翼のデザインを使用した　と書いてるね　　これで満足できないなら自分で探してくれ