I'd have to look again but I think it's doable but would not be an easy install. Not sure if it un-bolts or if some welds have to be cut. Took me a while to figure out what the framework was for but some helpful members here enlightened me. Here it is:
You have a good idea and I'm going to look into putting a water tank back there with the main purpose being to add ballast weight behind the axle. That would reduce the hitch weight (pretty heavy) by filling it whenever the motorcycle is not loaded.
BTW...you'll love the 25V. Very well designed and built trailer. Some mods you might consider:
Add a spring on the left side of the patio door. Makes it much easier to lower/lift.
Cut off the top half of the cabinet at the entrance door to have a better TV location.
If you didn't get it, definitely add a power tongue jack. It's really heavy up there.
Latest ones should have LED overhead lights but if not get the bulbs.
Search the Cherokee portion of this forum for other mods. The Vengeance 25V floorplan is almost identical to the GreyWolf 26RR and a lot of the mods done to that can be done to the V.