When I first had my 3" SL and 2" BL put on w/ my 33x12.50s I rubbed like a son of a gun and still do occassionally in really weird angles off road. I would highly reccommend getting the BL to save you on trimming if you are set on the 33x12.50s (and btw you can make a bracket or buy a bracket that will adjust for the difference for your bumper)