Can someone help me with this:
What's the distance from top of the door to edge of the canvas roof on a Du Vall window equipped 33/34 Ford Roadster w/canvas top?

I know this can't be an accurate information, since there are many different/home made Du Vall windscreens.

I need the information to set up the PW mechanism in my rod. Yes, I know roadsters don't have side windows, but my rod will have it.