There are 31 P51-D skins. It takes quite awhile for them to download using the Hanger option. All 31 are available and work on my system, but then I waited for all to finish downloading.
I've been playing more with tree collision. I could not reproduce the black screen I got before (and I hit a lot of trees). I did find that I could pretty reproducibly drive through one of the palm trees (in a set of four) with the Jeep if I hit it at a certain angle and at high speed.* (pic attached to ident. tree). I tried running into hangers (the quonset hut one). That works properly from the front, but if I back into them and can end up inside. I didn't try backing into other buildings and driving around in reverse is not something people tend to do in game. (I know these are picky but you did ask for us to test object collisions.)
The new FTH has windows: you can see out from inside, you can see through from outside to the floor and to terrain beyond the FTH, but you can't see a plane inside the FTH from outside through the windows; it is visible through the open door of course (this was with F3 mode).
[* I understand how this could be inevitable: if the Jeep is traveling fast and collisions are checked periodically, by the time a collision is detected the Jeep could already be inside the tree.]
