YES a B210 is a 120Y the 120Y was sold in the states as a "B-210" and had/has huge front and rear bumpers...
apart from running an A14 rather than an A12 there are a few differences... indicators are in the grille and the licence plate sits between the taillights rather than under the bumper...
and because US B210's has A13/ orA14's they can't really be called "120Y's" can they

... aparently the B211 (mildly facelifted B210) - akin to out late sedans) had A14's too!
then theres the PB210, but that's a totally different kettle of fish!