Ready for this Charlie ?.....
What I did here was take the profile view which was originally posted, then rotated the image to get the datum to match the 3-view which you supplied. I measured the length of the 3-view and re-sized the photo to match the same datum length......I then overlayed the two images and changed opacity so I could see each image, but it was a little hard to see each one in its own right so I just enlarged the canvas size so I could drop the photo under the 3-view and you can see what I can see quite easily......

From the shadow, there is a huge planview of the wing layout and taking the sun angle into account, I think that the photo shows a swept wing with a straight trailing edge (in the manner of the Harvard in your defense) and the 3-view shows a tapered wing with positive sweep on the lead edge and a trailing edge which is swept forward.....the fin and rudder, although similar, show a major difference in the trailing edge where on the 3-view, there is a vertical line and on the photo the curve continues down and under to join the fuselage .....elevator hinge line is questionable at best between both images..........rear sides of glasshouse could be made to look different, so this isn't really conclusive at all........Cowl style has different designer from the three plane formation you showed, to be generous........
I'm still not completely satisfied that this is an NA-50A and almost totally sure it's a modified something or other ???..... ::)
I hope we can get to the bottom of this one.... its got me so far........
