Q-Power - QBGMC07210 - 2hole 10" Ported for GMC/Chevy 2007-2013 Crew Cab Underseat Upfire Finished with Durable Bed Liner 2007-2013 GMC/Chevy Crew Cab Does NOT fit Xcab Mounting Depth: 5.5" - Chevy Speaker Box GM Speaker Box Chevy Box GM Box