i finished my 03 civic si hatchbatch this past weekend.

pioneer 9600
xm satellite tuner
4 boston accoustic FX-60 component systems
Alpine MVR F340
Kicker 02L515
Directed 1200d

i think i might want to get the audio control epc-160
it has the SPL meter and Microphone attached to it. this set up right here is the loudest and cleanest i've ever owned. when i play bass mechanic it slams lower then my best friends pair of audiobahn ALQ12's. I have to be hitting the 130's. I love it.