73-87 steering gear upgrade

[bucannon]

I am looking to upgrade my power steering gear box with a good unit, but i have read of many different options. which is best for my application?

In Hot Rod i found an archive of someone using a saginaw 800 steering gear, i cant seem to find it for sale. Or I dont know what year/model had the saginaw 800 -Link below-

http://www.hotrod.com/how-to/chassis...olet-cheyenne/


is the saginaw 800 the best bet? what other options are out there for these trucks? and of course what is the most economical since i am on a budget.