I use to Have one of these and it sounded and worked great. The overall system had a change in goals so I then went to two stealthboxes, and eventually the current system I have now. I no longer have my old boxes but on ebay i have found the boxes and i would recommend putting in a new sub so you know there are no problems with it. Plus you will have a warrenty again. THe sub that came with the stealh box is a 12 W6 version 2. 500 RMS watts is plenty on this setup because the enclosure is small and seald so no ventalation, and I actually melted the internal of the sub with a jl 1000/1.
This is the Stealh box
http://cgi.ebay.com/ebaymotors/Jl-Au...sQ5fEnclosures
This is the sub, but I would get it local and have them install to ensure all warrenties. It sucks, but it is the safest way.
http://cgi.ebay.com/JL-AUDIO-12W6V2-...1%7C294% 3A50
I do not know any of the ebay sellers so buy at own risk. I though I saw a Enclosure floating around the forum with no sub. I would buy from the forum before ebay.
If you have any questions or problems I will do my best to anwser.
Thanks
B