Dornier Do 335 - the Absolutely Enormous 470mph Half Backwards Fighter
The Do 335 A-1 had two underwing hardpoints for additional bombs, drop tanks or guns. It had a maximum speed of 474 mph at 21,300 ft with MW 50 boost, or 426 mph without boost, and climbed to 826,000 ft in under 15 minutes. Even with one engine out, it reached about 350 mph.