If you do, make sure the floor is in good shape and possibly reinforce it with a piece of plywood larger than the bottom of the battery to spread the weight out. Don't skimp on wire size to the converter. I would leave the old wire in place to keep resale value and the possibility to go back to original open.
2017 SLX 195RB
2014 Jeep Grand Cherokee Overland, gas 3.6 V6
Andersen WDH hitch
Dometic Milenco Aero mirrors