I have the bass 600, which I use in conjunction with the Pioneer radio that the dealer installed. It works great. I put it behind my driver's seat and put the wiring under the carpet (which is easy to pull up). I would say its a few hours to install it if you wish to hide the wiring under the carpet. It's a great little sub for the car. It won't rattle your number plate, but it will certainly help those two over-worked speakers in the doors. If you can filter out the low tones from the door speakers, then they don't have to work so hard and your high's will sound better as well as the better lows from your bass module. I'd recommend it as the best bang for your buck at making your audio system sound good.
My only issue: I was afraid to drill screws into the panel behind the seat because I'm not sure whether I would hit the fuel tank or something equally important, so I used the included velcro strips. The velcro strips attached to the carpet increadibly well, but the glue that attached them to the subwoofer did not. Now I have two velcro strips that I can't pull off of my carpet, and I have to reach behind my seat and adjust my subwoofer's position after a sharp turn so it does not vibrate against the seat. Anyone know where I can screw in the mounts? Any pics?
Cheers
Carl