did the hayabusa have anymore armemant than that single gun?
it looked like a nice fun nimble plane
From memory, so might be a bit off:
Ki-43-1a = two 7.7mm guns
Ki-43-Ib = one 7.7mm and one 12.7mm gun
Ki-43-II = two 12.7mm guns
Ki-43-IIIb (think) = two Ho-5 20mm cannons
EDIT:
The 12.7mm guns would be the same as on the Ki-84 and Ki-61. As they would be firing through the prop they would handle the same as the 12.7s on the Ki-84. I've downed quite a few aircraft with them, but if you want to see what they can to take a Frank up and only use the machine guns.