Thanks, Paul. I wondered about that. I'll get it corrected.
On my '51 Cadillac Miller Ambulance there is an aluminum shroud that serves that purpose, but it looks like it was hand made. It looks like it was just pounded out with a hammer--there are wrinkles in it from the construction. Is this something the coach-builder created? Should I just strip, paint it and replace it (for originality sake?) or try to do a better job having one fabricated?
If it works, then just clean it up and reuse it. If you want it to look pretty, use the old one for a pattern and have a new one made of steel. Then have it powder coated in the color of your choice, and install. It is your car, so do what ever makes you happy.