| I believe the AVG was supplied with export (Foreign Military Sales) aircraft, which would therefore be Kittyhawks. |
The AVG was supplied with planes diverted from the consignment meant for the RAF. 100 planes in total although not all of them made it there.
(Skunky is a closet P40 fanatic).
NB, Parsig9, Bert Kinzey did a couple of nice books giving lots of details about the various marks of P40s. Published by Squadron/signals Publications of Crowley Carrolton, Texas. A kind member of the forum put me onto those and I picked them up from the US ebay.