Wind tunnel tests have never really been done on the Pantera so, for the most part, any thoughts on this subject are pure theory. But, old Pantera wisdom will tell you that there is no appreciable airflow that will enter these windows unless you install one of those large ears that stick out far enough to bite into the slip stream. I have a set on my car and they do help.
The one definite advantage to removing the quarter windows is better access to clean the large rear window.
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