This Package Includes the Following Items:
1 x Harmony Audio HA-A400.4 Car Stereo Alloy Amp 4 Channel 800W Fulll Range Speaker or Sub Amplifier
1 x Harmony Audio HA-AK8 Car Stereo Complete 8 Gauge 900W Amp Amplifier Install Kit - Nickel
2 x Buick Cadillac Chevy GMC Oldsmobile Pontiac Factory Speaker Replacement Harness
2 x Kicker 43DSC504 5.25" DS Series 35W RMS 4 Ohm Coaxial Car Audio Speakers DSC5
1 x Chevy GMC Multi Model Factory to Aftermarket 5.25" 6.5" Speakers Adapter Kit
Harmony Audio HA-A400.4 Car Stereo Alloy Amp 4 Channel 800W Fulll Range Speaker or Sub Amplifier:
Specifications:
Alloy Series 4 Channel Class D Full Range Amplifier
Power Handling:
14.4V @ 4 Ohm Stereo
75 Watts RMS x 4
150 Watts PEAK x 4
14.4V @ 4 Ohm Bridged
200 Watts RMS x 2
400 Watts PEAK x 2
14.4V @ 2 Ohm Stereo
85 Watts RMS x 4
170 Watts PEAK x 4
Frequency Response: 10Hz-30kHz
Turn On: DC Offset or 12V Remote
Features:
Includes HA-EASY x 2 Speaker Wire to RCA Adapter to Simplify Installation
Compatible with both Aftermarket and Factory Source with DC Offset Feature

Kicker 43DSC504 5.25" DS Series 35W RMS 4 Ohm Coaxial Car Audio Speakers DSC5:
Woofers: 5-1/4"
Midranges: n/a
Tweeters: 1/2"
Impedance : 4 ohms
Max rec. Amp power: 70W PEAK
Max rec. Amp power: 6-35W RMS
Sensitivity: 90db
Freq. Response: 45-20k hz
Mounting depth: 1-7/8"
Mounting diameter: 4-1/2"

Chevy GMC Multi Model Factory to Aftermarket 5.25" 6.5" Speakers Adapter Kit: