hell yeah, that project was a BITCH lol. if you look at the back side, you can see I had to cut into his plastic just to get the top piece on. He wanted it tuned at 28hz I believe. It was for some 12" Polk Audio subwoofers. Cheap...but they'll be loud as heck. Yeah, we ran into the battery problem too, but what we did was make a board run where the passenger would put there feet across, laying on the center console. so that the battery and amplifier has a place to chill at.