I'm looking to upgrade from my type R to an even better sub. i think im going with the type x instead of twin R's casue i done have much space in the back of my extended cab s10. But it needs 500-1000W RMS, what would be best to power that? i'm looking at a maybe doing two Kenwood KAC-8152D to power it. they do 500w rms per, but only 300w at 4 ohms. so that still doesnt seem like enough power. i dont know much as far as what brands are good and what are cheap POS when it comes to amplifiers. can anyone point me in the right direction?