My initial plans were to use the wiper from a Mercedes W124 /300E (shown on the left) because it has a nice cam action for full windshield coverage. This however would require a large slot for the rotating cam or redesigning the whole front cowl or lid.
I will instead use the late 80's Scirocco wiper (shown on the right) in a centered 914 wiper mount...
Why? Because it's a "racy" European feature and will simplify the front even further...