I'm running 31" tires with no body lift and a 3" spacer lift in the front. I have the 2-door like you do. I had to pound everything flat behind the front wheels and trim part of the back of the front wheel openings on the fenders and also trimmed the inner fenders at the back. I now get mud thrown into the hinge area of my doors. Some people cut the front bumper, and I started that way but just ended up removing the whole outer bumper shell and styrofoam. I still get rubbing on something (I think it might the inner fender) when I go in reverse and turn at the same time.

In short, I doubt you'll get 31" tires under you with only a 1.5" body lift.