The plan was to buy an XJS windscreen and seal, fit the seal to the windscreen and then build a frame to fit the profile of the windscreen/seal.
Anyway the aftermarket seal was too big for the windscreen so I checked the seal specification with the supplier who told me the seal is normally big on the glass (50mm) but not on the frame, two piece seal you see (I got a refund)
So I went to the scrappy to get a frame, once at the scrappy I found out that the windscreen wiper mechanism is a lift out unit that fits into the front valance (great stuff) so why not just cut out the windscreen frame and quarter of the bulk head. Then I look at the roof and thought why not. The scrappy man was a bit confused.
I made up the inner door panels and the bulkhead. Spotted an Jarguar XJS at a local garage so I measured the windscreen which seem to be about the right size so I tack some flat bar together the same size as the windscreen and clamp it to the dash at the same angle as the Jaguar just to get an idea of what it may look like.