P-38 Stall Characteristics

[Luno13]

It would probably be too nose-heavy, unless the booms were extended. Interesting concept though.

To underscore what IceFire said: The P-38 was less successful in Europe as it was over Africa and the Pacific. The Jack was a relatively rare fighter, with only several hundred produced, and most flew bomber interception sorties. The late-war Russian stuff was light and fast (even Kozhedub is reported to have shot down two Mustangs which attacked him in his Lavochkin). The lightning was fast, but not faster than the late-war stuff on that list.

If flown well, it is a good fighter, but the P-38 really wasn't a "magic carpet".

If the development of the design hadn't been so protracted, it could have been a truly great plane.