This might be slightly O/T, but I thought I'd drop in and let the King Kong veterans know that there's now a freeware version of the Helldiver available for FS9 over at the Flightsim.com website.
The visual model is by K.Furuya. It has some of the most detailed figures I've seen in FS9. Hitting Shift+E causes the gunner to rotate and change his sitting position. No word of a Kong model being released.
The other big development is that a freeware record module has been released that allows a "player/flyer" to record a flight and then have it played back as AI traffic. In other words, you can now easily have two different planes on the screen at the same time in the FS9 world.