what about this?
AllPro got them..

A rear sway bar is another effective option, may be a lot easier to install than a front bar, depending on your front and rear end setups. I put on an Addco rear bar for a while last summer on my '85 and it worked fine. Its off now until I get the rear axle and other stuff worked out, but it made a big difference in handling and will be going on after the rear end work is done.

I also found that issues like minor bump steer are related to overall steering geometry. When I had this problem, I also had problems with wearing front end components like spring bushings and ultimately had problems with death wobble. Fixing the caster angle (I had too little) made the steering a lot more solid and now if I hit bumps with the front end, it stays put.

Brian, I know you mentioned body roll, but I have had good results on resistance to road irregularities (what, here in Colorado?!? Naw...) by going to 0" toe-in. No funny wear either. Can't remember whose idea I stole but someone on the forum.

yep, still use it almost all the time on the street. The only thing I don't really like is that the front is much stiffer sway-wise than the rear, so the truck follows the front. On uneven roads, the truck follows the front and rocks the truck back and forth w/ the road instead of kinda smoothing it out like it would do if the front and rear were better balanced. Its not bad, but its wierd. Especially when pulling out of a parking lot at an angle too fast. A small rear swaybar to even things out would be nice, but I don't care enough to bother. Just the front is good enough.

Can't say as I've ever seen a set up where the panhard rod and the drag link are the same length. A panhard rod could minimize bump steer when the tires are pointed straight ahead but when the wheels are turned the drag link and panhard rod will swing different arcs. Heck, my '00 Dodge has some nasty bump steer and it's got a panhard/track bar..... Yes, it's stock suspension.

Brian

JL4X4X45 has a home made Panhard Rod on his 89 P/U,D44,44044 SAS. It is not "quick" disconnect but it comes off with a little wrenching for every trail. It is adjustable for length and runs from the drivers U bolt plate to the passenger frame. He says it helps a little but that it does not help as much as he expected based on the theroy.

Drv U-bolt to Pass Frame? Doesn't that run opposite the drag link - I'm assuming a crossover steering set-up?

Brian

It is a cross over steering set up. Now that you asked I am not positive that it runs from the passenger frame or from the driver frame. I thought that the purpose was to locate the axle to limit side to side movement. What would change if it were not parallel to the drag link?

The panhard rod and the drag link would be 'fighting' each other to control which arc the axle follows - the drag link will lose with the result being bump steer since the upper end of the panhard rod can move since it's attached to the pitman arm.

Brian

Arcs are defined by the radii. If the length of each doesn't change, the arc doesn't change. It should still help the same even when turning.

Frank.