Front windshield set up on a Dart 67
The piece that your bodyman broke is the lower windshield lockstrip which is a plastic piece with a shiny surface that acts as the bright trim for the windshield bottom. It "locks" into the windshield gasket, see attached thumbnail pics, click on the pic for a larger view. I just took these pics a couple minutes ago, so I do have this piece in stock.
Hope this helps.....