Yep, you can run 33x12.5's on a stock Gen I (no lift) with only minor modifications to the front bumper end-caps (trimming) and after bending the splash shields slightly (forward end of the front wheelwells - can be done by hand in a few seconds). I have a 2" body lift and a 2" suspension lift and I could fit 39s if I wanted to.

EDIT: Out of curiousity, I just went out in the garage and measured. I conceivably could fit 39s but I'd have to pound out one small part of the bottom/front of the rear wheelwells. I could fit 37s with room to spare no problem.

Doesn't mean I'm gonna do it, though. <img src="/forums/images/graemlins/smile.gif" alt="" /> I'd rather not snap my axles. <img src="/forums/images/graemlins/shiner.gif" alt="" />