We currently have the KI-61 I...c or d model in the game now,after that model the JAAF used  a better version in combat, The KI-61 II,  the main differencs was the uprated engine(ha-140) and slightly enlarging the aircraft,same look,same gun package,same drop tanks and bomb load.    THE main performance difference was a better climb rate(equal to KI-100) and a slight increase in speed through out its altitude range with peak comming at a higher altitude....peak speed is about 380mph at around 19,600ft....in stead of  367mph at around 16,200ft.  the KI-61 II was made in quantity....almost as many as the P-47n and more than the ta-152....saw combat,recorded more kills than the p-47n and ta-152 combined, and as the ki-61 current cockpit and aircraft needs an update..can we add this as well....just like updating the ZERO.