well looking at the picture it appears like that protrusion wouldn't even clear... Seems like a WIP or a faulty landing gear :)
N1K's had some serious landing gear issues to start, don't know what they looked like ,the original ones, as they were replaced back then even.
I dunno, whatever it is it's going to be cool.
my 3 guesses, J2M, N1K, F7F (just because :pilotfly: )