I bought a leveling kit for my Silverado- only to find when I went to have it installed that it already had one on it though back was lower lift than blocks in kit (shocks were just that bad), so I went ahead and installed larger blocks on rear, shocks all the way around and jacked up the keys that were in it already. So now I have an extra set of torsion keys. Anyone interested in them...let me know. Bought from Rough Country...they go for $100. I would take a little less and throw in a Rough Country decal.