Hi 32vid, I import and install wood burning pizza ovens. I also import pizza oven burners from Italy that work with natural gas or propane.
I am thinking of doing something similar with my GMC 450 but only for display purposes, the oven would be set on the flat deck without any need for insulating between the oven and flammables.
Will you be installing the oven directly on the flat deck or will you be raising it up somewhat? I normally set the cooking floor at 42 inches off the ground for the easiest access. If you are installing the oven on the deck do you have enough room to allow for this height with a thermal break between the oven and deck?
Bill