Marlo,
As I mentioned in my previous post, I had one, I purchased the complete unit at the swap meet for $100 and it was nearly new. I guess the previous owner got rid of it because he could not get it to work right. I was certainly not happy with it. There are not many options and still maintain everything stock. I just installed a rebuilt steering box in a 57 Cameo and it was a vast improvement. If you use the stock steering box and the skinny tires they steer relatively well but not as good as an upgraded power steering.
I have a stock looking truck but I upgraded to disc brakes and power steering for my safety and convenience. Most people that look at it don't know the difference anyway.
Fred