Rebuild a power steering box

Heres the update, After buying the rebuild kit from napa at $57 and seeing alll the small gaskets and reading as much as I could about rebuilding the unit I decided to return the kit and I went with a steering box from steer and gear. The cost with hoses and fitting was about $400. They gave me a few different choices for what I was looking for and I went with their "sport" setup. I will install sometime this winter as that will be a major job seeing as the torsion bar and header will need to be removed in order to change out the box. I will also need to change out the shaft and coupling in the column as well. The only reason I choose steer and gear over firm feel was it was closer and saved in shipping cost.
Rod