I'm running the stock headunit with 2 kenwood 12s and a 1000w kenwood amp, whole set up with box cost me $250. I have the remote wire, a LOC which I don't like because it comes loose, a 4guage wire ran to the battery through a 150amp block fuse, so I no longer dim. My only 2 problems, when my sub is knocking hard SOMETIMES the CD will skip lmao. And that when I turn off my headunit the sub comes on and HITS hard, but I've been told its either negative feedback from the RCAs or a bad ground since the metal in the trunk is painted.
My setup is real clean, I'll take a pic when I can but it hits plenty hard, my last complaint is that now that I recently tuned up the amp after breaking it in, even at -6 bass, the sub overtakes the voice around volume 15+, so I need to tune it down a bit when its not freezing.