Thats mostly true. Convertibles in general are very hard to put sub systems in that you can actually hear inside the car. The other Sound Advice here in Miami built a custom box for a JL 6 between the seats. another option would be to build a box in the passenger footwell area. You will loose some leg room on the passenger side, but this gives you the best sound. We do this in Porches and Ferraries all the time. It is a very difficult box to build properly, but it can be done. I don't have any pics of it either.