Chuck Baader: "Center mirror...mount as low & close to you as possible."

We will have to agree to disagree on this one. One of the things you want to do in a race car is minimize your focal point changes. Moving the mirror closer does that ... big time!!! Mirrors are different from gauges in that there is greater information to process. As for the side mirrors, your idea has merit. Except that the only difference in the Mustang is whether you want your eyes to go over to the left ... & down; or over to the left ... & up. It's not an issue in my street GT as the seat reclines. Methinks that the answer lies in playing w/seat mount/tracks & OA angle.