I think you should expand the plexiglass at the front of the car to effectively make it just slightly bigger than the full projected area of the car. Thus, airflow will completely avoid the car body, minimizing interference drag - yet forward vision will be preserved!
You may need a few large brackets to accompish this.
You're welcome!
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OK, OK. Your idea can't hurt. It
might possibly lower the stagnation point as well, and more air over & around is usually better. I'd pay attention to the outside "edges" - make sure there's a radius, not a hard corner at the transition to the hood & sides of the headlights. Hucho will tell you you don't need much - half an inch radius, like the leading hood edge of the VW Rabbit (Golf 1) is enough to retain attached flow.