Reply...
Baldy,
Does it meet my approval??? I can't thank you enough for these! I've been saying for years that my biggest regret for Fall Weiss and Poland 1939 was not having updated Polish aircraft. You've done both main fighter types, as well as the Karas. These are all very nice models, but more importantly, they remain relatively simple and are very FPS-friendly, making them perfect as replacements for the originals.
If you choose to do so, the P-11c can easily be modified into a P-11a...all you'd need to do is slap on the skin from the Fall Weiss version and delete the exposed gun ports on the top wing, because she only had the two grooved on the sides of the fuselage.
If that's all you can do, that's fine...the last two would be a PZL P-37 (K. Malinowski's version is not multi-lod) and the RWD-14/Czapla. Then that's a full replacement!
For the record, the P-11s used the British Mercury for a sound pack, the Karas has a Bristol Pegasus (I included this with my Balkans campaign sets, among others) and the P-7 uses a Bristol Jupiter.