[Buckeye30]

Hi Nick. The Flight Tests (Wright Field) for P-38J types are in Chapter VI Para. C here; dated 4 Feb.1944.

http://www.wwiiaircraftperformance.o...-38-67869.html

General reports here, they may include cruising etc....

http://www.wwiiaircraftperformance.o...-38-wayne.html

Regards
Nick