Have you ever seen any Dart, Valiant, Demon or Duster with a rear window defroster?

My 75 Scamp has the blower/defogger for the rear window. Unlike the photos posted of the 70 Dart earlier this this thread that shows a duct under the package tray routing the air to a centre vent below the rear window, mine spews the air up right above the motor through a grill (opposite side to the rear package shelf speaker). I haven’t had to use it often these days but it still works. As other have said, it’s got two speeds.