P-400's were P39's that were shipped back from Britain and re-designated as P-400's. Only difference is it used a 20mm hub cannon instead of the 37mm. he 37mm was notorious for jamming.
Funny thing that PTO pilots used to say "...a P400 is just a P-40 with a Zero on its' tail..."
Warbirds had a model of the P-39 and it actually was kind of fun to fly. A nice change. Like the Yak-9T, one hit from the 37mm abd it's "lights out".
230G
479th Raiders