Ah, as to the exhaust: it appears to be both custom and very free-flow, capped with a Supertrapp fully tune-able end (the kind with the disks!).
Between that, the gauges and other clues, yeppers...somebody REALLY cared about mileage.
The one real flaw is the modest non-broke-through dimple to the left of the upper forward bunk window (as you look towards the nose from the middle). I'm considering having a single piece of aluminum diamond plate cut as an "armored shield" for that whole area against low-lying tree branches and the like.
It's sure as hell "different"
.