I got some leftover sheet aluminum from my dad's recent project, cut it down to size, and fabricated two pieces for the front fenders. They attach to some screws already on the area (the point where the fender/bumper becomes the wheel well) and redirects air which would otherwise have hit the tires.
I test-drove it around the neighborhood, too. I'd like to say it's quieter at 40+ MPH, but I might just be hearing what I want to hear.
I'll have pictures later.