Well, shortly after the first system went in the 'dairy truck' last year, the truck took a crap on the owner (thanks to a mouse in the fuse box). So....now we have almost the same components but a different truck.
2009 GMC Sierra
Pioneer 3200 Deck with Steering Wheel Controls
Memphis Audio 500 watt Street Reference Mono Amp
12" JL Audio Subwoofer in an old body style GM sub box
Put the amp behind the seat (back carpet was already cut for an amp.....well, chewed up)
Bass Knob was put down low
Deck pushed the stock speakers better than the stock deck could
All in all....good sounding system
Had a good friend of mine come in for some audio upgrades to her Jeep Liberty.
New deck with iPod, HD Radio, Bluetooth, and Auxillary input.
Kenwoods lineup fit her needs perfectly.
For sound, I hooked her up with a 400 watt Digital Designs 2 channel amp pushing two 12" Memphis Street Reference Subwoofers in a slot ported box.
Amp is mounted under the seat so it's hidden and out of the way....and the subwoofer box can be unplugged so the full rear can be used for storage/hauling.
Overall, I'm impressed with the output of the Memphis Street Reference subs and the simplistic design that the DD Audio amps have.