1973 Dart Swinger cooling

Is the Mopar part # for a 1973 Dart shroud 3691916 ? Also would a clutch fan help to keep temperature down?
you haven't yet verified that you're getting hot enough to even worry about any of this stuff. You could simply be going from 170 to 190 and really having no big deal. Until you verify a numerical temperature we're just talking back and forth....