Last year I emailed Magnidat about a problem with my trunk space. I needed something that would hit so hard that my head and back would feel like i was in a car crash! But I still wanted my trunk space at the same time. So he came up with a box with 4 tens (mtx thunder 5500) that would fit on the deck in the trunk. I didn't think it was possible, but here it is!!! (It sticks out 3 to 4 inches more than Magnidat design it too.)