Fast ratio steering box

[AcampoDave]

I have that type of box in my '66. It does not have the o-ring hose seals he mentions but instead having traditional flared non-metric threaded hose fittings.
When shopping for the box I highly recommend Redhead Steering Gears. They do them up right here in the USA in their own shop. They do cost more but the difference is noticeable as they have zero play in them. I'll never mess around buying one anywhere else again myself.
Edit: if you do reach out to Redhead, just call them it seems they're more on the old school side and do better that way than on line.