Product Code: QL-GTXAMP-gmc Price: Check Latest Q Custom Enclosure Chevy Silverado extended cab 1999 - 2006 GMC Sierra extended cab 1999 - 2006 GMC Sierra 2500/3500 extended cab 1999 - 2006 Custom AMP Enclosure ONLY  - QL-C1GTX110AMP Customer Convenience Package *Most Frequently Asked Question: "What subs match this custom enclosure?" We Take All the Worry Out of Your Matching Subs to Your New Box.  Just order the appropriate Subs from the 'drop down' option on top of this page. - DETAILS HERE Q Custom Colors-Here Read Details Carefully - Photo Right -shows 2 GTX110 boxes installed on each side along with the GTXAMP Amplifier enclosure in middle location. *all ordered separately   photo top left - OEM with no enclosures / photo bottom left shows view of seat raised and amplifier installed in center location (GTXAMP) Down-firing GTX110 model enclosure mounts on either side under rear seat. Suggestions? Put one under each side, and there's still room for the QL-C1GTXAMP in the middle!   Picture Right requires you to order (2) of the GTX110 and (1) of the GTXAMP enclosures.   Color Selection   Amplifier Colors 01 Black QL-C1GTXAMPA01 19 Graphite QL-C1GTXAMPA19 85 Camel QL-C1GTXAMPA85 86 Navy Blue QL-C1GTXAMPA86 A2 Pewter QL-C1GTXAMPAA2 AMP RACK ENCLOSURE -ORDER MODEL GTXAMP separately Amp Rack Model is: QL-GTXAMP   Custom-fit amp rack mounts over center transmission well hump under rear seat. Fits perfectly between two QL-C1GTX110 enclosures. • ABS plastic cover panels match your interior trim • 100% 5/8 in MDF construction on main body • Dado groove and miter joint design for ultimate strength • Open-top design for easy access to amp(s) • Amp mounting area: 16 inches x 13-7/8 inches