Update Apr 16, 2017:
Working on making the 1st person airplane meshes merged with the 3rd person meshes on more of the airplanes. Had some trouble with the F4U-1d (Corsair) UVW mapping but it works. Preview of the Bf 109E work in progress:
There are vertices which I have to carefully move so the two models fit as seamlessly as I can make it without distorting any shapes. So far the F4U had the hardest models to merge.