With 33's and the current setup you will probably be okay, but it depends where you set your bumpstops. On mine up front they are about 4" before I hit the bottoms of the front fenders, which is not ideal. I will be fixing this once I get a longer shock and cut more of the fender, and rebuild my out bumber extensions. Bump stop is pretty important because once you get full droop on one side and the opposit side reaches its bump stop, it will put more downward pressure on the axle with full droop giving it traction, and thats whats needed for foward movment. In the rear I have no bumpstops and this would help me greatly, but I broke off all the bolts that hold the bumps stops on and have never fixed them. I will address this once I get frame stiffeners, but its a hinderence for sure. I hope this helps?