Looked a little closer at the 15 pics. If I'm seeing it right, and based on the 13 build style, I think you can remove one of the spares at the frame by loosening the bolts and sliding the steel tubes out, leaving you two 2" receivers. I wouldn't want to drag around two full size spares for a single axle rig, but I could think of a lot of cool uses for that extra set of receivers. Bike rack (might have to fab up an extender), custom firewood carrier, tool rack, etc. Those of you that are handy with a welder could come up with some cool ideas back there.
Sent from my Pixel 5 using Tapatalk