28/9/12 in front should be ok,but someone else may know more about the mudd lites.Not all 28s run true too size. 1 inch shock spacers may help as well.I run 28-9-12 Big horns in front and the just clear by a C- hair. But if you decide to use mudd busters then they rub the nuts at full turn, but you can live with it.just sounds worse than it is.