Pioneer TS-D10LS2 D Series 10" 2-ohm shallow-mount subwoofer at Crutchfield
BOSS Audio Systems CXX104DVC Chaos Extreme Series 10 Inch Car Audio Subwoofer - 1000 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck Boxes and Enclosures, Hook Up To Amplifier