I worked through the P-39 volume of OSPREY's
Aircraft of the Aces series and found no trace of a P-39 kill over Asia, no Western New Guinea kills, no Phillipines kills and no CBI kills were mentioned.
The notion that the P-39 scored 5 CBI kills is from here:
https://www.warbirdsandairshows.com/...torieswwii.htm
See also my P-39 thread:
http://forum.12oclockhigh.net/showthread.php?t=47977