I measured it as good as could.
The crossover pipe to the driver's side is the problem right?
From the bottom of the bed floor to the highest point I measured 5 inches.
Back Closer to the y out of the muffler, the drivers side crossover pipe to the bed crossmember is 4 1/4 inches.
I wouldn't think that would be the problem area.
Hopefully this helps.
It's 5 degrees out there right now.
I think I'll leave the truck in the garage and not go out and play/listen to the sweet sounds it makes downtown between the buildings.
Jeff