I know the Qa1 uppers have 3 degrees of extra caster built into them. I do have the offset Moog bushings already in my upper A arms. I don’t know what billstein RCD shocks are or the lower rubber bushings but I have a brand new set of Vikings on it. I plan on Running Nittos on it. I bought my rear springs several years ago before I knew about any of this upgraded stuff. I believe they were HD Mopar Performance springs just like it would have on it brand new but I would like to lower it 2” without buying new springs if that’s possible. Thanks for all the help and suggestions guys, it’s much appreciated.