Here's what I have on the Mille GT:
http://www.nationalcycle.com/n8863-01.html
Headlight Cutout to Top of Screen: 20.50" (52.0cm)
Width: 31.50" (80.3cm)


This is a smaller version that I had on the V50:
http://www.nationalcycle.com/n8332-01.html
Headlight Cutout to Top of Screen: 20.00" (50.5cm)
Width: 29.50" (75.5cm)

The difference in height isn't much, but the extra half inch was needed in my case.