TRACKBAR, anyone here run one?

I'm not aware of a panhard bar kit, but that most likely means that someone will know of one and post a link. You can buy parts and pieces from the various race car parts vendors if you're willing to go with SRE's for the joints. It becomes more difficult if you want something better sealed from road grime. First step up would be to use some Seals-It washers with the SRE's, but any off-the-shelf bracket available may not have room for them. Next step up would be to use tie rod ends for the joints. If welding is an option then cut the steering arm off those old LBJ's and use them to fabricate some mounts for a panhard that uses the OE tie rod ends and then cut an adjusted sleeve in half and weld each end to a long enough tube. Or you can buy the right taper reamer and put that hole in other steel parts. Could go lighter duty parts and use TRE's from an ATV. Some (all?) of those do not have the taper, they fit a straight hole. Maybe those for a UTV rival the size of the OE TRE's? No idea.