Wasn't aware of clearance issues with the Ark....anyone care to add?
Hmm, haven't had that myself. As you can see in my photo below, it does sit quite low, but the low part is directly at the axle - so it will raise up when your wheels go over a speed bump. I've never had that part scrape.
What about those stupid humps that don't go the full width of the road, I scrape on them now!!, so i've taken to not driving across them on the angles, but go over 2 humps so it raises the car up with the gap where the exhaust sits now......actually i'm pretty sure thats what messed my existing exhaust up......hmmph