It should fit. The fenders were made standard or RS for grille. The emblem holes should be the same no matter what model car you have.
i don't believe that to be correct. i could be wrong, but i think the holes in the fenders for mounting emblems are in unique positions for each emblem. the square styl engine call-out emblems may all be the same from 230-396 but i think the Z-28 will line up different