Ok so I have bit the bullet and purchased the fully adjustable rear suspension linkage kit from Ground Control.
While I remain skeptical, I’m tempted to use the Gyraline app and fixture as an alignment tool. The one time cost seems a no brainer versus multiple trips to the shop for multiple tweaks. Or many hours spent with tape measures, string and a camber gauge.
if anyone has any input I’m all ears. Thanks in advance!

 

Gyraline looks promiesing. Please let us know what you think of it, if indeed you go that route.
I lowered my Limited, made my own rear camber link, toe and sway bar link. Front suspension has K-mac bushings on both legs of the A-frame. I continue to use toe boards and Longacre camber gauge/tool. Only once did I go the string around the car thing; a lot of work for little gain.
When you install the new ground control arms I suggest you remove and install one arm at a time; Don't disconnect anything other than the one arm you are working with. I also suggest you only swap the camber arm and the toe arms. If your car isn't lowered that is all you'll need to get the rear alignment where you need it. If it is lowered you will need to do the sway bar link also or the original will hit the camber arm. The trailing link and the track bar can probably be lift original, unless your bushings are shot.
If your car isn't lowered you could likely get away with just an eccentric bolt on the camber arm.
Good Luck and enjoy the ride!

 

All my bushings are showing their age, cracked and not returning to center when tension is removed. So I figured this would be a one and done solution as opposed to waiting for each bushing to crap out. The Ground Control setup ended up not being much more expensive than all stock style arms and eccentric bolts.
For now it will retain its stock ride height, but its height will probably change in the future.
Good advice on changing one arm at a time though. Many ppl will just tear everything apart and then struggle to get it back together. My plan is remove each arm, measure the center-to-center length of the original on a cmm, then set the replacement to the exact length of the originals centers, add torque marks then install.
The Ground Control kit has been ordered however I’m still skeptical about the Gyraline, just seems too good to be true. Then again since when hasn’t being a gear head come with its fare share of trial and error. Definitely enjoy the car though, was working at a dealership in 04, saw one and instantly got hooked. Took a few years for me to acquire one as family responsibilities came first. But when the kids moved out I snatched one up and have been loving every moment.