FWIW I just installed all new KYB GR2's, mounts and Eibach springs on all 4 corners at 382K miles. Rides just fine. Then again my results could be kinda skewed since the rear struts I pulled out were still factory originals, lol... With my Dorman solid front sway bar, GMPP rear trailing arms and sway bar and new bushings on both ends it has really tightened up. It's not a road racer by any means but I can tell the difference for sure over the stock stuff and none of the bushings are poly at this point, just plain old rubber. Stays much flatter in corners and doesn't seem to slam over most bumps unless you catch a good chuckhole or a big seam in the road.
