MyJeep needs a ton of front end work. Ball joints, shocks, and then that trackbar. But that assembly concerns me the most -- is it attached to that horizontal shock? Is it also attached to the tie rods? How expensive is all that stuff and how difficult is it to replace? The sway bar is ok!
The trackbar attaches from the passenger side of the front axle, to the drivers side frame via a bracket. I'm assuming by horizontal shock you mean steering stabilizer? That is attached to the drag link. Are you sure you need a track bar?
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How are you judging these are worn out? Keep in mind they're ball/socket connections where they'll swivel some and won't always be straight up/down.
Jack the front end up some, leave the tires on the ground, then have someone else turn the steering back/forth while you're looking for loose parts/joints. You can also use a pry bar to try to move them up/down to see if there's slop/play in the ball/socket itself.
To check your ball joints jack a front end tire up about 3-4" off the ground, stick a 2x4 under the tire from the front then have someone lift it up/down while you're looking at the upper/lower ball joint for play/slop. There shouldn't be any if they're still good.
When replacing tie rod ends start hosing the threads down ahead of time with rust cutter. You'll most likely have to put some heat to the threads/sleeve, particularly if you live in the salt/rust belt. Measure the threads in the pipes on the old ones and try to tighten a new one in the same length. But you'll probably still need an alignment after all this front end work. Good luck!