I am looking at getting a SkyJacker 2.5 inch lift for my 84 K5. They have two 2.5 inch lifts, one with all new springs and one with new front springs and blocks in the back. Would blocks be ok in the rear for this size lift? I am going to run 33 inch tires. Would any steering modifications need to be done with this lift? Would the fenders need to be trimmed? Thanks There's no Bud in my alcohol occifer!