i ran the gutter on 31s with a locker and no lift, but i did the big go around. i didn't run the creek bed till i had a 3" lift and 31s and a locker. if anyone running the creek bed at the gutter has bfg's chances are they will slice one. i did, i know colin has killed at least a few there, before he had the big-boy tires... i also ran ma bell on 31s, a locker, and 3" lift. you won't be able to do all of the obstacles, but what you can't do there are go arounds. you two should be fine especially if you are good drivers. that being said, people roll and break stuff all the time at ma bell.