Hi all,
Most P-51 fans know about 43-12102, the first P-51 to fly with a bubble canopy, basically a D fuselage with a B wing

but, how about a Mustang with a B fuselage and a D wing...

Beside the modified 43-12102, NAA had subsequently taken two other P-51Bs from production lines, 42-106539 and 42-106540. They were supposedly brought to P-51D standarts, and labelled P-51D-1-NA. To my knowledge, no picture showing those two planes has ever surfaced, beside the two published in Michael O'Leary's book, "Building the P-51 Mustang", one showing the cockpit with the important data plates, identifying the plane as 42-106540, and the other showing the right wing, with the 3 guns and the 5 rockets.
Althought blurry, the picture showing the tail indicates that this is 42-106540 (strangely enough, they have not painted the "2"), and that the fuselage was not modified, unlike the wing.
Laurent