Jeff, once again, not Concours on my vehicle but I welded all the way around, out at the frame where the well is below the control arm and to the frame rail. There was a crack about two inches long as well, so I drilled a hole at each end of the crack, then metal finished all the welds. It's MUCH better than Ford did it. At the time I didn't know those terrible welds were done at Ford. Hopefully, there aren't future issues. 512 HP and 498lbs of torque is hard on a single torque box..
-Keith