Back in the day i used to install glass for a living and dont remember any of the clips needing screwed in on ebodys . Sounds like someone may have removed the studs for whatever reason . If the holes are in the correct location you can screw the clips to the body , just be assured the height of the clip is correct so it can catch the moulding . If you want it correct , the holes will need welded/grounded and then re-studed with a stud gun . Hope this helps

Mike

It's a Mopar thing , If you have to ask you wouldn't understand