The toepeice screws are the same as the toepiece used on the new PX12.
In the healpiece the front 2 screws are way shorter than the back 2 and from what I know one of them isn't very common. Shops usually don't have leftover FKS screws and you might be able to order some from Rossi/Look but chances are you'll have to find a longer screw and grind it down to fit.