It’s been a while since I built mine, but as I recall, there is a flexible corrugated piece that fits inside the opening in the door. the corrugated piece extends down inside the lower door, and is lined with a fuzzy material. I glued this into the opening using weatherstrip adhesive.
Gap at top of window sill ( bottom of window opening ) has a small trim piece with rubber wiper piece each side.
You can use your passenger side glass as a reverse pattern for drivers side. Glass shop should be able to cut out of lamiglass
