I recently mounted my spare tire in my roof rack so I'm not necessarily looking for your hitch mount, but I did reach out to those guys and asked them about building a storage box for the empty space where the spare time used to mount. I asked them if they would work out a price if I were able to get several people on board on this forum.
I'll let you guys know what I hear back!!
2.25" Rocky Road Lift, 17" Vision Wheels, 265/70 17 Nitto Terra Grapplers, AEM CAI, Powerstop Drilled and Slotted Rotors, Custom Double Din Dash kit with Kenwood DX-418, Custom 3rd row Toolbox, Yakima MegaWarrior Safari Rack,Yakima rack extension, KC 100w long range lights on roof rack, 2 10" Kicker L7s, 1000 Watt Kicker ZX Amp, Flowmaster 50 SUV Series Muffler
Future: Steel Armadillo Rock Rails, steel storage box in place of spare tire, Bilstein Front Struts with reservoirs