69 Z28 Front disc brake calipers factory numbers?

[rally]

Guys can you help me out. What is the 69 Z28 front disc caliper factory assembly part number they used. Can i find a good used pair from someone with the correct numbers. Do you know where i could buy a good used factory pair? Would ebay be good to find a set of them?

[william]

I believe the castings are 5463633 [L] 5463634 [R].

Not rare, other GM cars probably used them.

[rally]

Thank you William.