i did a 153.6 average in a 30 sec street beat run at a USACi event with 4 10's below the glass in the back trunk area...I blew a seal on one of my rear side windows
I ended up cracking my roof w/ 2 13w7 and a 2500d..
1 of the roof support beams weld came loose and and ended up w/ a small crack that turned into a pretty big crack.....My roof had some major flexing.. ill see if i can find some old vids for it. I ended up bondo/glassing the crack, adding some mdf for support and 3 layers of mat on it....