Rear Screen for 1973 Chrysler New Yorker 2 dr Hardtop

Technical query around rear screens, the recently acquired NYB has a shattered screen held together with vinyl wrap.. fine for now but I'd like to get this changed out eventually.

Believe these are Obsolete according to my main glazing contact(don't know about sealing rubber) ... so was thinking I'd have to go the hard coated polycarbonate route but a 72 Imperial 4dr has appeared for breaking in the UK... are the rear screens the same?

Many thanks in advance.
Author: IronMighty