You are correct on the first two items pictured. They mount the passenger seat to the top of the tool box, along the front lip. The second piece looks like the windshield lock latch, for the center of the windshield, and connects to the loop mounted to the hood. The last pieces are a puzzle to me. The third item and the fourth go together, but I can't picture in my mind to where they went. The fifth piece in my opinion is the windshield mounts for the soft top rods. The rods mount to the inside of the windshield, at the upper corners of the frame. The last piece looks to be the rear view mirror bracket
https://www.kaiserwillys.com/diagram...ew-52-71-m38a1
http://www.willysmjeeps.com/v2/modul...wtopic&p=61739