Technical 1929 ford roadster windshield

What is the height of a stock 29 roadster windshield? are there two heights like a 30 31? Mine is chopped, but I have no idea of how much. I hope to order a top soon and need to know how much it is chopped. Thanks Guys Rich

 

I don't know if this helps but I pulled this from an old speedway catalogue when I needed measurements for my Deuce windshield frame.

 

1928-1929 roadster / phaeton had only 1 windshield height. 1930-1931 roadster / phaeton had 2 windshield heights, the standard windshield was taller than the deluxe windshield.

 

Here's a stocker measures 14 1/2" check out the hand crank wiper it is both inside and outside.
A Roadster necessity in the Midwest.