1968 power steering upgrade questions

[almostaranch2001]

Hi all

We just purchased 1968 chevy 1/2 ton 4x4 all original. The truck is for my daughter and the first upgrade we would like to do to the truck is power steering. She will not be able to drive it the way it is right now. I have not had a chance to check all of the knuckles or the steering box yet to see why it is so difficult to turn. The question i have is there a powersteering replacement box for this truck? It has the steering box with the pitman arm on the side of the box and I have not seen a PS box in this configuration before. It may be best to upgrade to a newer front end with Disk brakes and then I should be able to use a newer PS box as well. Thoughts and suggestions welcomed