I have 2 12" Oz Audio Matrix 300L subs that would be perfect for your application. Single 4 ohm and rated for 250 watts each. In great shape with the original boxes. Seriously serious sq sub stage. They will go great in a small sealed box which you can get anywhere, so no need to pay out the rear to ship a box, unless you want. I do have a small sealed box for them that I could throw in. Around 150 plus shipping. PM me for more info if interested.