Yes. The major difference between the "M" and the "N" is the addition of the parge plexiglas section behing the framless sliding canopy and the rear decking sheet metal under it. There should also be a clear sprue with the more standard framed sliding canopy and the rear decking covering with the earlier style side windows. There should also be a colored plastic "plug" that goes under the "M" style rear glazing.
As far as I can tell, the L, M, and N were just about the same airframe, externally, except for the aforementioned canopy differences and the fact some early Ls had only two 50 cal guns in each wing instead of three.