Originally posted by DennyW
Looks like your pitman arm is way to long, and you have it hooked to the end of the wheel arm. Thats max shock.

You lost me here . . . the draglink goes to the aft hole on the right side steering arm.
I'd be inclined to think there is less shock when the right wheel hits a bump or whatever.
That due to less leverage by the wheel on the arm.

Long panhard bars are better than short ones.
Especially in the back where they tend to end up too short if you use the typical aftermarket rear axle housing mount - or worse yet the really short mount that bolts to the carrier bolts.

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Aside from that - and maybe it's just me not understanding what DennyW is talking about.

Are you running steering stop nuts on your kingpin locks?
If not you should be.
The steering should stop - or bottom out - on the steering stop nuts and not on the internal stops in the steering box.
Relying on the steering box's internal stops leads to damage in the steering box.

If your stop nuts were purchased in the last few years they are probably the right length (1 3/8" including the thick washer).
I point this one out since some steering stop nuts are too long.
Usually the stainless aftermarket ones that were available in the mid-80's up to the late 90's.
And they may still be out there with the thinking being, the car builder will cut them down to the correct length.

I ended up with a set of the long ones and found the car had a very wide turning radius.
After cutting them down - twice - .120 each time I ended up with the stop nuts at 1 3/8" (which is how long they are nowadays) and a car that had a fairly sharp turning radius.

It can be a juggling act to get everything set up right - IE: steering stopping on the stop nuts, draglink the right length, steering wheel straight when traveling straight ahead etc. but it can be done.
All it takes is a little trial and error.

Don't be surprised if you have to shift your pitman arm one tooth on the pitman shaft to get where you want to go.