What concerns me also is the Z bend hitting the spring perch or the TB. With it flipped, the high spot will be facing up. Even if you bump to 33's in the future, I think you'd be just fine with BMB pads/Centric rotors vs. the BBK. I've ran both, and yes, the BBK is next level braking, but it comes with a price tag.As it stands now, I'm weighing whether or not I want to do the 15" Big Brake upgrade now. Given the need to weld the new bracket to the knuckle, it makes sense to upgrade now. However, I'm trying to feather the throttle on spending. That may impact when I do the flip. When I do get there, one thing I'm a little anxious about is whether or not the adjustment sleeve will cause interference.