Empty Sub Boxes. - Kick Panels. Fits 99-06 Chevy Silverado Ext Cab Alpine S-W12D4 Single 12 Sub Box & S-A60M Amp 1999-2006 Chevy Silverado Ext Cab Truck Alpine Type S S-W12D4 Single 12 Sub Box Enclosure with S-A60M Amplifier & 4GA Amp Kit.
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