I've heard the toyota will work good...... I used a reman saginaw power steering box on my 52 panel that I bought over the counter at Advance Auto. You can see some pics in my photobucket.
.....and there are a couple nice write ups on how to do it on a couple of the vendors sites.

http://www.classicperform.com/tech_articles/Power-Steering-Trucks/Power-Steering-Trucks.htm

http://www.classictruckshop.com/t1.php

I got my "kit" from Classic Parts



1937 Chevy Pickup
In the Gallery
1952 Chevy Panel
In the Gallery
More photos
1950 Chevy Coupe
Pictures!

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile