Your track bar and drag link should be (ideally) the same length and at the same angle in order to avoid bump-steer. Also, the closer they can be to parrallel to the deck, the better.
If you still have the original steering set-up, w/ original length drag link, you're track bar should be the proper length, as long as your lift included a dropped pitman arm and lowered track bar bracket.
If your lift doesn't include a dropped pitman arm and lowered track bar bracket, and the adjusting sleeve on the drag link was turned out to make it reach your stock pitman arm or something, then yeah, your track bar would be too short... follow? Don't think this would be the case, but just as an example.
What's it in the shop for anyway?
Did the guy disconnect the track bar for a repair? Tell him to turn the steering wheel to get the bar to reach it's bracket. The drag link (if hooked up) will move the axle/truck enough to put the bolt through.
Anyway, you can get adjustable track bars from JBG.
-m