Plastic interior pieces in early Barracudas

I know what the 2 bigger pieces are on the bottom of the picture and am in the process of making a mold for that bigger piece. but what the heck are the 2 narrow pieces? and where do they go? anyone go a picture of them installed and out? I'd like to get a set that I can glue together to make molds from so I can re-produce those parts.
Those 2 little pieces run vertical at the front of the window where it meets the sail panels.