[Stuart]

I happened across an eBay seller called Tomsclassics that is selling disk brake conversion kits for 1955 through 1964 big Pontiacs. They're apparently part of Auto City Classic in Minnesota; I knew they sold window glass and replacement gas tanks, but wasn't aware of the brake kits. https://www.ebay.com/str/tomsclassic

[Tempest]

I recently purchased the power brake disc kit from Toms for my 58. (Canadian car so I ordered the Chev kit) I won't be installing it for a few years, but for the price I thought I would get it now. ($550)

Booster, Master, Calipers, Drilled rotors, Prop valve, flex lines, and even pre-bent steel lines.

https://www.ebay.com/itm/23279573963...gAAOSw8JZbo8gu

I hope it works as good as it looks