Nah, this battery came from a guy named David Pickel. (He got pissed if you called him Pickle, lol) I used to work for him at a shop called Music Masters. He really knew his stuff.
The entire van was the sub enclosure. You had to sit in the port to drive it up on the trailer...
The van ran 18 yellow tops, 9 high output alternators, 8 4KW Memphis MOJO Class D amps, all double zero gauge wire powering 2 rebuildable M3 Memphis MOJO subs. Last I heard the highest he'd managed was 172.8 db.
I'll tell ya what. The power HURTs. I was sittin in the port one day working on something on the dash and he accidently bumped the speakers. I thought I had gone deaf!
Fun job.