Q Power QBGMCFF07408 8 Inch Quad Port Subwoofer Enclosure Box with Underseat Front Fire for GMC and Chevy Crew Cab 2007 to Current

Q Power 8 Inch Quad Port Car Subwoofer Speaker Enclosure Box with Bed Liner and Underseat Down Front Fire for 4 Subwoofers, Black

BOSS Audio Systems KIT2 8 Gauge Complete Car Amplifier Installation Wiring Kit with Power Cables, Ground Cables, Turn-On Wire, Speaker Wire, Terminals

SUB ZERO Ice SS3327 Speakers, 6.5-inch Coaxial 220W - Black/grey