Steering box adjustment keeps the steering wheel "Free play" decreased, but doesn't have anything to do with the alignment OR how well it's done.
The ride height adjustment on the torsion bars is easy to do, but can be tricky in how Chrysler specs it out. Basically, the bottom of the rocker panel should be parallel to the road surface when everything's set correctly. Many advocate using the height of the front wheel opening, which can be variable as one fender might be a little higher than the other side, for example, knowing how much variance there can be in a car body. On the rocker panel deal, just eyeball it after you've driven it so that everything's pretty much where it should be. All it takes to do the adjustment is a big wrench with a little offset in it, as the head of the bolt is between the two "ribs" in the control arms. Do a little at a time, then recheck. If you go too much, the front end will be high.
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The ride height can affect camber adjustment and ultimate caster angles.
As for the steering gearbox, those Chrysler boxes will NOT feel or act like a similar GM box, no way, no how. That's just how they were back then. Also, check the "rag joint" at the base of the steering column for deterioration. If it might have been installed wrong (there are two ways it will assembly, so I'm told), which can also cause a "loose steering" situation.
Next time they tell you they can't align the car unless they replace the steering gearbox, tell them you're more worried about tire wear than steering slop, at THIS time.
CBODY67