Amazon.com: Kicker CVT104 (43CVT104) 800W Peak (400W RMS) 10" CompVT Series Dual 4-Ohm Car Subwoofer : Electronics
SUB P25 - Focal 10" 200W RMS 400W Max Single 4-Ohm Subwoofer - Newegg.com
Mtx Magnum 10" 400w Rms Dual Loaded Subwoofer Sub Box System Package W/ Boss Audio Systems Kit2 8 Gauge Complete Car Amplifier Installation Wiring Kit : Target