If you already have Chris Shores'
Air War for Burma (Grubstreet Publishing 2005) I would recommend Hiroshi Ichimura's book
Ki-43 'Oscar' Aces of World War 2 (Osprey 2009) which has claims and Japanese losses of the 64th Sentai in some detail.
https://ospreypublishing.com/ki-43-o...of-world-war-2