I just put my car back to stock, so I'm selling some stuff. I'll get you some pictures when I get home, but I used a 2 channel, Kicker amp and some factory harnesses to make a plug-and-play solution that replaces the factory amplifier.
It sends highs to the door speakers through each channel and then I bridged in a crossover that you can use to hook up a sub (if you want, I used a polk 10"). I've had the OEM Audio plus system and this sounds almost as good (believe it or not).
PM me if you want and I'll make you a great deal on it. Like I said, it's plug and play, won't blow a fuse and it fits in the same space where the OEM amp sits.