Cast or not to cast that is the question. I have been looking at ideas for the screen posts for the roadster and I think that the types of posts on the old mga and midgets are near enough for the roadster. They dont fit of course but the concept is a goodun. The glass drops in from the top and there is a rebate for the side screen to go into and plenty of meat to hinge off.
With this concept under the dash I reckon it would be easy to mount.
And if the contours were right it could fit snug on the scuttle.
Now on to the casting.
Bob