I am intalling a friends system that she ripped out of her old car. The problem is that she can't get the box into the trunk, but it will fit perfectly if it were two boxes of half the size. I had planned to just chop the box in half and seal the two open ends..................BUT, I have an idea that would save myself time and her money. I want to chop the box in half and put 2 latches (like the one pictures below) per box side (4sides) with a rubber gasket in between the two halves to seal the box. Has anyone ever seen anything like this done?? How do you think it will work?? Do you have any suggestions as to what I should use for a gasket.