just to clarify this for everyone. all he is doing is raising the uppers. nfamus sells the tabs to do this for $80
99-06 CHEVY CONTROL ARM TABS - NFAMUS METAL
no reason to go waste time cutting a set off and welding them on top of yours looking thrown together. at least make it look good if you're going to ignore suspension geometry like this. only do this if you're going to go to the Belltech 2508 spindle.