Hi
I have a 74 1303 as well. I'm using a 350 mm Momo wheel. I'm a little over 6 foot and I cant see the top of the wheel, but when I had my speedo out, I had the lines extended at each 10kph marking towards the centre, it helps. My car uses the later style splines on the hub, fine spline with a taper.
I've thought of several different ways to combat this, lower the seats, lower the speedo in the dash, fit a smaller speedo in the same hole that can sit lower down or fit a 2 inch speedo where the clock would sit. Like these ones
http://egauges.com/vdo_mult3.asp?Typ...ries=Cyber_Red
from Cyberdyne
Steve