"Small,light, and agile, the russian Yak-3 was more than a match for Luftwaffe fighters" Yak-3 description. See F6F-Hellcat for stats info.
Yak-3D stats: (upgraded only)
Yak-3P stats (upgraded only)
The Yak-3 its unlocked by doing Coral Sea in Ace. Useful for Pearl Harbor to Marianas, not recommended for Ace missions.