I saw some of the fiberglass door panels at Wilkinson's shop. The materials were impressive. Maybe call or email Wilkinson to get advice on fitment to your car.
Not sure what an “impressive” fiberglass material actually is, but I think owners would really be impressed if they could buy something that…….actually fits……. when you take it out of the package.
sort of like owners would be impressed with clutch master cylinders that don’t self-destruct and thermostats that are actually correct for a cleveland engine.