What year is your CJ?
Not normal. I just did both of these replacements. The first is your tie rod ends, which you can either replace individually or just replace the whole darn thing if you can't get them out of your tie rod like me.
My recent thread
I picked up a kit from Oconee Off-Road along with the rest of the steering linkage off of eBay for under $100:
Knuckle to knuckle
Pitman arm to knuckle
The parts seem as beefy as the originals, but I've only put about 20 miles on them.
You can buy polyurethane boots, but honestly as old as yours are, I'd just replace the whole darn thing like I did. Don't forget you'll need to realign, which I did at home with a long board and a marker.
As far as calipers, you can buy remanufactured ones for about $18 a piece. There are some variances in year and models, though, so make sure you're getting the right ones. One caliper I bought had a 1/16" ring where the hose fitting mounted that didn't allow a proper seal, and my brake fluid leaked all over the garage. Went back and ordered one that had a flat mating surface (actually had shallow concentric rings that allow a good seal with the copper rings they give you), and put it in, bled my brakes, and am now back on the road.