O/T adding tractor power steering

If the Super A is in decent shape, you might consider selling it and upgrading to a newer tractor with ps already on it. Don't know what the super A is worth, but around here you can sometimes find something like a IHC 300 for about $2500. A small Ford or JD of that same age, condition and hp might bring another 500-750.
Unless you just want the challenge...

Here is a link you might find helpful:
http://www.hotlineguides.com/
I think you can poke around on there without a subscription.
C