Hey jason, on yjs in order to change the rear pinion angle you can either cut/weld your spring brackets or use shims.
from the reading I've been doing I figured out the lca's are what control pinion angle right?
What purpose do aftermarket uca's serve
Aftermarket CAs should serve a few purposes; flex better than stock, control axle movement, center the axle and correct pinion angle. The length of upper and lower control arms work together to control the pinion angle. You can use adjustable rear uppers to change your pinion angle, but rotating the axle back by lengthening the uppers without shortening the lowers will cause the wheel to be un-centered in the wheel well at full bump, especially with lengthened, fixed lowers like most kits include.
That being said, there are apparently some little knockouts on the UCA mount on the axle side that you can knock out and use a cammed bolt to adjust the pinion angle slightly. I just learned of this the other day and don't have any real experience with it. I do know cammed bolts have the potential to move around and loose their adjustment.
If it was a hardline, replace them all now along with any other cheap componet while your there.
Use prebent lines unless your a pro with brake lines and the double flare tool. They may seem expensive, but they are so worth it. That is first hand experience btw....
I've replaced more hardlines than I care to admit, and never used a prebent one on a brake line. I keep 25 ft spools around for repairs. Unless you're doing a full replacement and/or a museum restoration, I don't see the need for the prebent lines. The bends on the repairs don't need to be perfect, they just have to function. Most people driving vehicles old enough be blowing the brake lines can't afford the full prebent replacements.
I suggested pre bents for one reason only, for speed and ease of install.
I had to put all new lines on my yj last fall, I think the learning curve made it worse that it normally is, but getting the lines to follow the frame was rough, then getting the flare tool to flare correctly was hell.
I think my lines ran me $50 after mistakes. For $190 I could of had ss lines that were pre bent.
Needed a canoe to get to work this morning. Haven't seen flooding this bad around here in a long time. They are saying as much as 6.5" in the last 24 hours right in the bullseye...I live in Burton right on the right side of the bullseye.