Ya i told him the best bet was to use cardboard boxes. But it doesnt look like you can really get anything big at all in the opening. I dont feel safe trying to measure, build a box and find out it wont fit in the opening ha..
Not sure how or if that two box idea would work. I would have to look at it and see. Was hoping to make a single chamber box with a single port on it also. Was thinking if there was any decent way to build the box in two pieces and somehow put it together in the trunk or something haha.. Doesnt sound like it would work good at all tho.