FoxyCapri - thanks, was already aware of Rare Spares, but they have two listed for Capri : RLS120 and RLS120C. I have messaged them late yesterday to find out the difference.
InRodWeTrust - Fitting the glass takes maybe 15 mins for front or rear screen, fitting the bead without the fancy tool took me at least an hour each when I built the car up 7 years ago. I have a small amount of 7/16 left over and a new long strip of 1/2". I want to use the right one this time, whichever that is.
The current windscreen is not cracked or chipped, but the laminate is going off. When the sun is low the laminate goes into panic mode - opaque*. Not good whilst driving into the sun.
*With thanks to Douglas Adams and his Panic Mode Sunglasses. (I think that is the right crediting of reference).