Has anyone tried or done a power steering conversion with these types of kits?

Article showing the steps for conversion:

http://www.hotrod.com/how-to/transmission-drivetrain/1505-power-steering-for-straight-axles/

Here is the kit from CPP at a cost of $539.

http://www.classicperform.com/Store/1960_1972_Chevy_Truck/CPP5559PSK-OC.htm

I haven't gotten very far in researching more options for better prices yet. I'm probably going to look more into this after I have been on the road a little with the bus this year and explore this more for early next year. Just wondered what others have been doing.

1956 Chevy School Bus Superior Body
In the Stovebolt Gallery