ohh ok. I guess it depends on the rims the car comes with, as the 15's or 16's aren't as wide as some of the other ones.
And with the placement of the air dam, i'd say front. Reason being is, it is supposed to keep air from going under the car, with it in place where you have it mocked up you letting air to go back already, and then hit a straight wall. the air can't go up, and if it's straight across the air would struggle deciding which side to exit to
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Randy
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