If what you are saying is true, (about what looks like glass) then the newer ones are different, because the only glass that is in mine is the actual light bulb itself. I have seen where the silvering has gone bad on the reflector because so much water had gotten in past the front yellowing lenses that seems to be common. Just a note, the ONLY clear lense that I have ever seen was-is mine after it was replaced with a new one out of a box. It would still be clear if it didn't have dirt all over it on the (sealed :laughinginside.
You will get a much better job from the paint shop if you strip the hood of the grill, hood ornament and hinge hardware. I hope that they are going to put new decals on for you, that would be nice. Maybe ask them if they are, or see how much more to put new ones on if they aren't going to.
Good luck
Took pic of headlights so you can see the actual face. On the bottom front of each headlight is a manufacturer and part #(IMASEN ELECCO 1111-232)