Original Power Steering Ram Questions

[Coley]

Hey guys...you don't see me in the 60-66' area much but I've been primarily working on my '72 for the last year or so. I do check in tho' as a bit of a reader than a poster..but that will probably change in a year or so, when I start doing the upgrades, etc on my '66.
I have a couple of questions regarding the original ram style power steering systems for the 64-66's (and 67's?).
I recently acquired one in a rather odd/last minutentrade and I won't be using it so I'm trying to figure out a) what it might be worth in case I list it locally for sale...and b) how it works. It appears to be in pretty good condition...but I'm looking for info on it. As well, I took a bunch of pics of it but I think they are too big to load here....at least as far as I've been able to figure out so far (300+kb size)
It doesn't have a pump like a normal power steering system. It seems to have all this lower cylinder/ram/lines and what looks to be the connection point to the steering.
What sort of a pump runs this? or? Is there any market for these? or does everyone run the newer style pumps and steering boxes...which is what I was intending to do on my '66.
Many Thanks in advance!!!!
Coley