i thought they used the right spit and 109 for the small skirmishes in the enlgish channel in 1941.
...and what's wrong with the p40?
There was no US pilot who flew Spits with the RAF, then made it to Pearl Harbor to fly P40s and then managed to join Doolittle and fly B25s on that raid.
If they'd have called it anything but "Pearl Harbor" it wouldn't matter, but the name suggests it's history, and the movie isn't. Just my opinion of course, but I do believe they could have done it right.