I have a question for you guys.
I'm looking into turning the little storage compartment in the back of my KK into a little tool box. I'm going to be using diamond plate for the top of it and attaching that to the floor with a hinge. The issue I see is attaching the hinge to the floor. It is just thin plastic so i don't want to just use screws. I would like to be able to drill a hole so i can use a nut and bolt. Does anyone know how id be able to remove this plastic storage area so i could do this?

The red line is where I want to place the hinge. Sorry for hard to see pic, it's night time and cell phone flashes fail.
Thanks in advance