I am thinking about doing 2" or 3" lift on my 08 FX4. Any suggestions on brand or type? Does to matter with such a small lift, are they all about the same? Will I need to replace the stock shocks with the use of blocks or spacers? Should I just get a level kit for the front and try to find someone with factory F350 srw blocks/u-bolts for sale (would this give me 2" in the rear)? What about ReadyLift, anyone have good or bad about this company?