Hi, lately ive been wanting to lift the back end of my 94 K1500 suburban. I looked at lift blocks but i'm not sure if that is very safe, my biggest fear is that they could come out. I like the design of the ORD zero rates becuse it bolts to the leaf pack, so here are my questions. 1. how wide are they? 2. can i have them made taller than 1 inch? thanks for any help.