Post #5 is the exterior window felt/seal.
Post #4 is what mounts to those open holes. You will also need the clip kit. Those get riveted to the door, then the trim attaches to the clips.
You have '87-up doors on that car, so you will need trims to go with those years. What do your mirrors look like? Are they the '79-'86 or '87-up mirrors? I'm not sure of the interchangeability of moldings/mirrors.
Another thing you could do is to fill those holes, whether its welding them up or another method and run the correct '79-'86 window felt. The '79 pace car pictured above is correct for the moldings. They did not have the second trim piece outside of the window felt.