Jawman-
I picked mine up in rough shape. The previous owner already had the 33's on it with no lift. Not sure on the wheel back spacing. The inner front wheel wells were taken out, front struts were flipped, and the lower portion of the fenders were trimmed close to the door. There was bad rubbing on the fire wall when the wheels were turned about half way. These tires dont have deep lugs on them. With the 2" body lift however, i can almost have the wheels turned all the way. When i have the suspension flexing, it hits on the front fenders more than the rear. In the future, i'm going to downsize to 31's. These are just a little too big IMO. a suspension lift is a must with 33's for sure. hope this helps.