Although none of the kits are perfect, and one promised kit has never been released (Dragon - USS Pennsylvania 1944), the last few years have seen a huge increase in the classes of battleship available in plastic in 1/350 scale. What I can't find is anything about a New Mexico class battleship.
I wonder if a Pennsylvania/Arizona class kit could be used as a start. Although the superstructure is completely different, the clipper bow was apparently the major change in the hull
Anyone tried building one of this class in the post 1941 fit.