From my research of all the threads on this subject, an IB setup is just not enough volume for when the top is down. I had JL stealthboxes with 2 8's in my old e46 M3 coupe, and it sounded great when parked, but when driving and road noise was introduced, it was pushed beyond it's limits (it was a IB setup too).
Also, does anyone know the maxim height of a box that could fit in there and butt up against the ski pass? Thought about going that route too since I could easily remove it if necessary.
Last edited by MikeS123; 07-27-2012 at 11:54 AM.