Ok so I have a 2001 Tahoe ArWD non auto ride with a 2/3" drop. Spindle front and spring rear with shock extenders I want to do a full swap to the SPOHN performance set up. Can some one tell me what I need they have two adjustable lower rear arms and like two uppers that are adjustable and then the standard rear lower and which pan hard bar. I am so dam confused. Grr. I work nights so calling and talking to them. Is almost outta the question. Can anyone assist me please?