oh well, time to build a cad model and get quotes then.
The seals I have are a mix of Fiero and Pontiac 6000 seals. From Rockauto. There is a recent thread on here, where someone discovered the inner seal missing from the rear overhaul kit is in the Pontiac 6000 kit.
It's the thread wftb posted above:http://www.fiero.nl/forum/Forum2/HTML/137765.html
I have 5 rear calipers, the pistons in two are toast.