It's like CC stole the CAD drawings when they left PSC. With that said, I'd be inclined to support small biz over 4WP.
When I tried to climb a big rock at Hale, I'm sure glad I had a heavy duty rear bumper. My rig slid about 4' off of the rock right down on the shack tabs and hitch. Not sure what shape it would be in if it was aluminum. Also glad the tire carrier didn't hit.