You can get rebuilt calipers on exchange from Centric. A shop/custormer of mine got these for under $70 each his costs. Can't remember the price very well, may be even less.
Those are nice too. Trying to keep original parts on this 383 Barracuda not sure if there is any date coding on these calipers.
I like those Centric are they Kelsey Hayes rebuilt by Centric or do they have there own casting. I would be interested in knowing who carries those too.