Hi everyone. I am new to this site. I just got my 2010 WRX 4door Premium yesterday and I am not pleased with the system. But it sounds ok when I play a MP3, but the radio sux. I just ordered a Pioneer AVIC-Z110BT, Diamond D662 for the front, Diamond D661 ( I had these from my previuos car), JL Audio 6 CH amp (had also), and a MTX box (had too), steering wheel control adapter to work with new radio, and IPOD adapter. I plan on doing the install myself. I have the 10 speaker system. Since the D662's have detachable tweeters, I am putting them where the existing tweeters are and I am putting the D661 in the rear. Is there a factory amp in the car or do I have to rerun all speaker wires? My previuos car (2008 Audi TT) had the amp in the trunk and I tapped into the speaker wires and used the stock Navi unit with a JL DSP Clean Sweep (which I am selling for $100 if anyone is interested).