I’ve been reading about this as well.
It seems the best fitting/ looking fiberglass hood is the one from Hartline Performance. It is a bolt on hood (uses factory hinges and hood latch, recommend using lower pressure gas springs) and heavier than others, but requires less prep for a show car.
Ultra carbon may have the same qualities, but haven’t heard.
There are pin on hoods that are very light, but do require hood pins, Dzus fasteners or similar.
That’s all I know.