You'll need the 70-71 style belt molding clips that anchor into those holes. The clips have a very thin plastic base that keeps the molding off of the paint. The molding gets pushed down onto the clip to snap in place. If you try to slide the molding on (like you may have taken the old one off) you'll probably scratch something. The part that is sometimes challenging is that the repro molding strips aren't always curved as much as the door, so snapping them into place can be difficult.
