CaliCobra,
The rake of the windshield is determined by the angle that you bolt the uprights to the body of the car. The windshield is a separate piece that fits between the two uprights. It is held to them with 4 screws on each side. If your windshield is a standard Cobra size, then it will fit.
On a side note, during the early racing days of the Cobra, some of the windshields would "mysteriously" develop a lot more rake during the race. At the tech inspection after the race, it would be right back in it's full, upright position. Isn't that strange?
If you're in LA, we can meet and try it for size.
Paul