Sorry, thought you were looking for CZ 75 B parts but only finding the Pre B parts. I didn't realize you were just curious, I thought you had been unable to find the parts for the newer model.
Some parts look similar (haven't tried all of them).
I have used the "B" model hammer spring, recoil spring, trigger return spring, grips/grip screws, extractor, extractor spring in a Pre B so they do work.
I believe a Pre B hammer is too wide for a "B" model. The barrels are different. Not sure how a Pre barrel would work in a "B" model but the slide on a Pre B must be modified to use a "B" model barrel.
Many of the descriptions of the parts in the links will say what models they fit, or don't fit.