I too would like the same info on spacers, for I think I might be heading that route for the rear. I did see this other option but looks pricey for me
check out this post...has alot of info but specifically page 3 post 49 talking about raising the rear. Seems like alot of work, but it seems it would be done right. Also wondering how accurate this info still is...posted early 2009
http://www.elcovaforums.com/forums/s...ad.php?t=36505
I'm actually looking at getting "gm green keys" and front rancho shocks and the cognito UCAs. Did you replace anything else besides UCAs and shocks and how is your ride quality?