gkelly, how wide of a rim are you looking to run? What is the offset/backspacing? Adding a spacer? How wide is the tire (11.5, 12,5, ?)? All of these things play into whether you will have rubbing or not. not trying to sound like a wisebutt, but more information is needed to give a solid Yes/No answer.
Making an assumption that you are going with a standard 33x11.5" tire and going with an 8.5" wide rim with the standard 4.5" of backspacing, you should be fine with the 3" body lift. You would even possibly be able to get away with up to a 35x12.5 on that 8.5" rim with the body lift (may need to do the wheel well mod, but that is easy to do and cheap to accomplish, just have to be willing to take a 3 pound hammer to the body of the truck).