That's a prototype, Richard. If you look closely at the door apertures, you can see why..!
I'm in the process of commissioning a mould, but the variables are many for commercial viability and i've got some good brains on the issue. Think carbon fibre rather than glass..
Well done Steve grasping the nettle, this hardtop desire from quite a few on here has rumbled around for a long time now. Good luck with the project

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It looks like a TOK car with this on already at this stage.