Good luck with that Will. I did a little looksie after seeing this thread today and on one forum after another it was like Brembo WILL NOT sell parts in regards to disassembly or repair of the caliper body. Seals springs pins? Yes. Housing bolts tubes etc... No.
Someone at a forum commented that you can just make one or have a machine shop do it. Hot rod shop if you have one close.
Let us know if Brembo comes through. Maybe Will is da man