I'm afraid I can't lower that much my cx (cd in the US?).
Got .35, maybe I can improve a bit the airflow with a blocked grill, narrow tires, maybe I can search in fiat parts if I can put some other side mirrors (mines look like truck mirrors! :O )
I can work on the air flow underneath the car, but for the car body itself, because of it's "box" design, I'm afraid I can't do that much
