[basjoos]

I've tuft tested the back window and it has smooth airflow as seen in the rear view mirror, but I don't have an easy way of viewing tufts on the underside of the boattail while I am underway. I suspect the are under the tail has a fairly smooth airflow since I live on a dirt road and any areas of the car subject to unattached and eddying airflows quickly get coated with a fine layer of dust. One of the unanticipated benefits of aero modding my car has been that it stays a lot cleaner now. No smashed bugs on the front and dust on the back.