I've been tinkering with an idea to put a standard GM power steering box on a straight axle stovebolt ahead of the axle without all the usual Mickey Mouse drag link setup the popular kits use, by simply mounting the box on top of the frame, rotating it 90 degrees and letting the Pitman arm hang down parallel to the frame. Just one problem- - - - -the steering would operate backwards that way- - - -turn the steering wheel left and the truck steers right! I'm in the process of designing a simple 1:1 ratio spur gear box to reverse the steering shaft rotation just ahead of the steering gear, which should solve that little problem! The steering shaft would run along the top of the frame rail and connect to the steering column with a couple of double-Cardan universal joints, eliminating the tendency for the U-joints to try to lock up every 90 degrees that some very expensive aftermarket steering systems that I've driven do. The result would be a much more rigid Pitman arm/drag link/steering arm relationship that would be a lot less likely to cause bump steer problems once the height of the steering box is set up to make the drag link parallel to the ground.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!