I will be installing a computer work station behind the passenger seat and would like to anchor it significantly. What you should see in the pix --if it uploads-- is a box behind the heat duct cabinet which is located right behind the front passenger seat. It appears to be made from plywood covered with carpet, but is not removable as far as I can ascertain. Is there anything inside? Would it be better to drill through the floor and anchor the desk with through bolts from the bottom? (This would be outboard of any of the center-line mounted tanks) Thoughts, ideas, techniques welcomed.