I assume we all use the same windscreen; if so, then one of the roadster tops in the following page from FFR might work for you. I had the $1600 US one on my last build; as good as any 50s or 60's Brit sports car top.
You could also check with Rod Tops
http://www.rodtops.com/pdf/RodTops-F...ers-Manual.pdf re dimensions of your roadster vs. FFR's. Rod Tops make the FFR Premium tops, and they are NICE!
Cheers, Dale