We did this sound quality build a few months back. Alpine IVE-w555bt for the headunit, Digital Designs AW6.5 speakers and AT28 tweeters front and rear. The substage is handled by a pair of Digital Designs 3000 series 10" subs. For amplifiers, we are running a mosconi 300.2 for the subs, which is 1800 watts RMS, and 2 mosconi 100.4 running all active on the mids and highs. we also sound deadened the entire car.