Thanks, I had missed that thread.
It does seem that if you could curve a brush around the outside edge of your wheelwell, that in conjunction with a smooth hubcap could do a fair job of isolating the airflow around and inside the wheelwell. And if you had an airdam that had 5" of ground clearance and could add a 4" brush below that, your effective airdam would be within 1" of the ground, which should do a good job of keeping air from flowing under the car. Add to that some brush side skirts and things might be pretty quiet under the car.
I wonder if there is a clearinghouse that has odd lengths of the stuff that they would want to get rid of for very little money?
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