The two large pieces are the top rear corners of the roof, both passenger and driver's sides.
The driver's side was the only one present, so one of the previous owners had banged that out. The little corner piece next to it is all that was left of the opposite side.
So....Voila! an opposite side has appeared. Both will need to be sure-formed to match the original.
Also the piece in the middle is a curvature somewhere in the car. A previous owner had glued the original bit to a LARGE piece of wood. I cut it out to shape.


