三菱J2M为了截击B-29而生，高空高速性能好，用这个和烈风同级，紫电改也可以考虑放到7级，这样的话日系7级就不至于太坑。
美军缴获测试J2M3可是最大平飞速度到了671km/h的家伙，到了高空拦截B-29时还有一定的机动性。
Two captured J2Ms were U.S. Technical Air Intelligence Command (TAIC) tested using 92 octane fuel plus methanol, with the J2M2 (Jack11) achieving a speed of 655 km/h (407 mph) at 5,520 m (17,400 ft),and J2M3 (Jack21) achieving a speed of 671 km/h (417 mph) at 4,980 m (16,600 ft).
美军缴获测试J2M3可是最大平飞速度到了671km/h的家伙，到了高空拦截B-29时还有一定的机动性。
Two captured J2Ms were U.S. Technical Air Intelligence Command (TAIC) tested using 92 octane fuel plus methanol, with the J2M2 (Jack11) achieving a speed of 655 km/h (407 mph) at 5,520 m (17,400 ft),and J2M3 (Jack21) achieving a speed of 671 km/h (417 mph) at 4,980 m (16,600 ft).
