Great modification and write up with pictures! I'm surprised I missed the post earlier. I have a Special Edition roadster with the cloth seats without heaters, that most of us know sit lower than the heated leather seats, that gave me the headroom I needed. I don't drive the car in the winter, so heated seats would never be used. I was thinking of adding a Limited coupe to the driveway fleet, but when I test drove one the headroom was an issue. I didn't want to drive with my head slightly tilted. This post gives a work around to that problem. Many thanks for the contribution.