With il2 4.12.1 I noticed that the Ki-43-II Kai appears to be using a -III model shape? ie. the ejector exhausts are grouped in -III style. However the performance when i test the -II Kai is identical with the -II? From what i learnt on the internet
The -II Kai model increased speed almost 35kph over the -II!
I think the il2 Ki-43-II Kai model be "renamed" into the -III which it resembles more closely, and the FM changed to the -III power rating and water injection (100L tank behind pilot) it makes a very useful upgrade in later war battles.