It looks like #8 is the rubber block the windshield rests on. There were only two on my car. Unless they are ruined somehow they are reusable.
If #1 is the clips that the molding snaps to they come with the windshield, installed in the proper places even. An aftermarket glass wont have them.
Put the clips on the glass before installing it. New moldings are usually required as well.
I hope I understood your question correctly, the diagram was difficult for me to interpret.