Truly, the violence in making the transition. Now I wonder about what I read, if it was mere folklore, or what. Can't see the Mustang going there, far too light and airy. That '38 though....a pair of I-beams with cross-braces...heh...that thing might have done it despite the straight wings. That Ugly Bastard.
I think I might be getting my planes mixed up. Wasn't it the P51 that had the huge arse engine that was so nose heavy? That's the plane (if correct here on the plane) they experienced the turbulence on the dives. Just a thought here; I seriously doubt a prop could go super sonic without a major major upgrade on the horsepower.