That is cool.
But what are you protecting in there? If a crook knows what's in it, they may just destroy the console, come with a sawzall etc. If the item is small like a gun, you might be able to cut and fit a steel box under the floor below the rear seats. I haven't thought of things like that, so you are blazing a new trail. There is some dead space below the floors in the rear corners, it's inside the wheel wells behind the tires. You might do something with that space, but the inner quarter panels cover a lot of that floor area. I've got those panels removed in my mail truck, to make use of that lost volume.