you dont need to remove the window, just the door panel, when you get that off it will make sense, when you get the new seals they should come with rivets, if not, just take the old one or use a drill bit to get the diameter and get some, you can use screws but rivets work alot better in this situation. Like I said, once you get in there it will make sense, I replaced both sides on the 89 I had and Im not a mechanic by no means.