[c30]

You won't find a rebuild kit but here is what I did.
I want my truck to look as original as possible. When replacing the master cylinder, it seems all I could find was a big ole squared off looking thing that did not look at all like the original. Had a single bolt on cap instead of the two wire bales.
Knowing that the bore of my original was 1", I think, I ordered a master for the correct application with the same size bore. I disassembled both, honed out the original to clean it. Then reassembled the old master with the new innerds and it's been doing fine.