Installing Kelsey Hayes Caliper Pistons ?

Here is some stuff that will probably work and not break the bank: McKay Brake Assembly Lube, Old School Quality, USA made, Lowest price on Ebay | eBay
That's what i wrote about in reply #2.
Readily available from that vendor, and it's good stuff.
Have purchased a few bottles from him.

As a matter of fact, I'm using that assembly lube right now, as I'm finishing up the rebuild of a pair of 65-72 Kelsey Hayes, 4 piston calipers.