This Package Includes the Following Items:
1 x Chevy Subwoofer Box Custom Dual 12" 99-06 Ext Cab
2 x Kicker 43C124 12" Comp C12 Series Sub 150W RMS 4 Ohm SVC Car Subwoofer
1 x Harmony Audio HA-A800.1 Class D Mono 1600W Sub Amp
1 x Harmony Audio HA-AK4 Car 4 Gauge Amp - Nickel
Chevy Subwoofer Box Custom Dual 12" 99-06 Ext Cab:
Features:Dual 12" Chevy 99-06 Extended Cab Sub Box
Air Space: 0.95 Cubic Feet
Mounting Depth: 5-3/4"
Sealed Enclosure
Dimensions: Width 51" x Front Height 9-3/4" x Rear Height 7-1/4" x Depth 13-1/2"

Sprayed on layers for a long lasting, durable, water resistant enclosure (same
technology as spray-on bed liner)
Enclosure installs under rear seat down firing
This box fits:1999 - 2006 Chevy Silverado Extended Cab 1500, 2500, & 3500
1999 - 2006 GMC Sierra Extended Cab 1500, 2500, & 3500

Kicker 43C124 12" Comp C12 Series Sub 150W RMS 4 Ohm SVC Car Subwoofer:
Size: 12"
Impedance: 4 Ohms SVC
Power Watts: 300W Peak / 150W RMS
Sensitivity: 88.3 dB
Freq. Response: 27-500 Hz
Mounting Depth: 5-7/8"
Mounting Diameter: 11"

Harmony Audio HA-A800.1 Class D Mono 1600W Sub Amp:
Specifications:
Power Handling:
14.4V @ 1 Ohm
800 Watts RMS x 1
1600 Watts PEAK x 1
14.4V @ 2 Ohm
600 Watts RMS x 1
1200 Watts PEAK x 1
Frequency Response: 10Hz-180Hz
RCAs: Input and Full Pass Through Audio Output
Features:
Includes Remote Bass Control Knob with Power Indicator LED
Includes HA-EASY Speaker Wire to RCA Adapter to Simplify Installation