Fits 99-06 GMC Sierra Ext Cab Truck Alpine S-W10D2 Type S Dual 10 Custom Sub Box
Empty Sub Boxes. - Kick Panels. Fits 99-06 GMC Sierra Ext Cab Truck Alpine S-W10D2 Type S Dual 10 Custom Sub Box 1999-2006 GMC Sierra Ext Cab Truck Alpine Type S S-W10D2 Dual 10" Sub Box Enclosure New - Final 2 Ohm.