Amazon.com: Alpine ALP19-R-W12D2x2wKit Car Audio Type R Dual 2 Ohm 1500 Watt 12" Subwoofers with Sub Install Kit and HA-SWKD Dual Sub Box Install Kit - 16 Screws and Speaker Wire with
Alpine Linking Kit Two 12" Subwoofer Enclosures - KTX-H12
Alpine BBX-T600 Amplifier and W12S4 12-inch Single 4 Ohm Subwoofer - Includes wire kit - Creative Audio
Universal Car Stereo Slotted S Port Single 10" Alpine Bundle Type R R-W10D4 Sub Box Enclosure with Harmony HA-A800.1 Amplifier & 4GA Amp Kit - Walmart.com
2) Alpine SWR-8D2 8" 1000w DVC Car Subwoofers+Mono Sub Amplifier+Amp Kit SWR8D2 - Walmart.com