I'm glad that it worked out for you. It was an inexpensive change originally.
Original calipers are harder to find but reproductuons are available as are rotors.
The spacer/adapter is pretty simple and straight forward.
I don't know if the set up will fit with 7 or 8 inch wheels though but I think it should with a 8 inch Campi.
The inside diameter of all the Campi wheels is the same.
I've seen this ised on three US races Panteras. I doubt the Euro guys would run anything but Girlings.