I've been looking at a Soundstream Picasso PCX 2000D, 2000 watts RMS @ 1 ohm, but you have a dual 1 ohm sub, so thats not really an option. the RMS power at 2 ohms drops back to 1500 watts, but you need more than that, so there is the Soundstream XXX-6500D, gives 3300 watts RMS at 2 ohms. (coils wired in series will work i guess, but you might lose some power) the problem is, i cant find how much they cost but theyre still good amps