I actually have a JL 12 W6 V2 subwoofer I'm about to put on ebay along with a JL 500/1 mono amp. I had them professionally installed in a previous car by Tweeter, and 3 months later had it professionally uninstalled (ie I payed them to removed it as well).

They are barely used and in excellent condition. Still have original boxes and packing materials. PM me if you are interested.