I just recently purchased a 2004 4x4 crew cab Titan. I am ready to lift it. I am probably going to get the CST 7" kit with Radflo coilovers up front and the Radflo 2.0 shocks in the back , but I have a few questions. First off what are the Deaver springs used for? I noticed that a lot of people with lifts also have these springs. Also how can I achieve the maximum amount of lift from this kit but still have the front and rear ends stay level? What parts, like upper control arms, etc..., would I need to upgrade? Thanks for any help.