Ki-43-II Kai is actually a -III model?

[taly001]

Yes it seems only the first <150 Ki-43-II got the longer 43-I wings. So the il2 Ki-43-II represents the major production model ~2800.

But the il2 Ki-43-II Kai is a mess. The Ki-43-II Kai was an interim Nakajima design produced 4/1944-9/1944, only ~500, some even used water injected engine.
The Ki-43-III was built ~1100 starting 10/1944 at Tachikawa, all with Ha115-II water injected engine.

I have been using SFS file extracting tools and looking at SAS mods. They have proper Ha115-II engine with auto-water injection (system like Ki-84).

The easiest fix would be keeping the "coded" name KI_43_IIKAI for compatibility, but changing "game" name to Ki-43-III, and aliasing the Ha115-II engine for it, with ~100L MW tank behind pilot.