Need a little help about lower windshield glass & molding on a 68 Dart GT

The first photo is a clip on my lower cowl. The screw is mostly rusted away on this one but the clip is intact
and still in position. I believe these to be original since the paint and sealant seemed untouched.
The second photo is a clip that was used on the side post and across the top. They are different.

IMG_20160615_115019_632.jpg

IMG_20160615_115114_313.jpg