This is my friends car at a show today. It's 2 btl 18s walled on only 2k total (2 ab100.1s) lol. He had it on 6k before his amps smoked.
I just thought that it does great hairtricks with 1k on each sub.
Oh and it's tuned at 25hz
http://www.youtube.com/watch?v=Whr9E9Z-i2o