I'd imagine the windshield garnish mouldings would be sufficient to locate the front edge,as far as I know the sides locate under the windlace trim inner lip.
Not sure how the rear edge is finished/attached though.


1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.