I have a 97 with the RCX 5" lift on it, also a 3" body lift. I want to get more lift out of the back. There is 4" blocks in the rear right now. So if i get 6" springs made, will that able me to take out the 4" blocks and just run the big 6" spring? That would give me 2 more inchs of lift than i already have correct? Will I have to get bigger shocks? Thanks in advance.