I just got all this installed-
GC coil overs, KOIN yellow, urethane bushing kit, ST sway bars front and rear, Front ingalls camber kit, front, rear and lower strut bars!!!
The car sounds like crap in the rear, very loud and squeaky over everything. The front is perfect, not one peep out of it. In the rear it sounds worse than before I brought it to the guy? What could be the problem and where do I start ? Help guys!!! 
:mad:
Squeekyness could come from either your camber kits not being lubed properly if you have those, or also I noticed that on the higher settings my Koni’s squeek a little over bumps, but they dont do it on the lower settings.
Hope that helps.
I only have a camber kit in the front and the noise is from the rear. He said the rear is set in the middle on the KONIS
Dont know what to tell ya then, try adjusting the koni’s in the back down a little and see what happens.