I am in the process of designing a custom box that will take up the entire back seat area of my civic. If my math is right, it will be 2 6cuft boxes, ported on the floor behind each seat. With a 6ft ported box with a pair of 15" L7s and my 1250Watt RMS amp with Subsonic filter, with 2 LA 1Farad caps, it should really kick out some low street shakin bass that will annialate an spl competition.
I layered my entire floor and sidewalls with dynamat extreme, and once I remove the headliner will put dm extreme on that too. After building the box, I will be putting some litecrete in the floor chambers to deaden any harmonics between the box and floor.
I will put pictures on when I get closer to finished (and when my roll is empty, no digital camera...)
So far I have finished my dash and trim panels, all gloss black with red accents. I plan to put indiglo gauges in with red faces once I find a SI gauge cluster...
I can't wait to show it off...
If only I lived in an area that had other civics around..