its the AC 2 inch lift...but its more like 3. its a 3.75 back spacing. no rubbing when i flex (although only flexed on like a 2 foot rock) i used a heat gun and pushed all the plastic lining forward in the front and i had to take the front mud flaps off dremal out a bit of the fender.. then then i cut all the crap off the flaps and put them back on and ill be tryin 33x10.50 here real soon.. my buddy has a 4runner with 33s so ill put em onn and check it out.. (thats how i checked to see if his old 31s would fit, they did so i bought em and he got 32s, so a few months later he got 33s, so i tried the 32s and they fit with minimal rubbing so i bought those, and who knows maybe ill end up buyin the 33s)