Not trying to beat a dead horse with Bose questons, but I'm curious what 2ohm door speakers we have available to us. We added a Pioneer HU to my son's '05. We ran it through the factory Bose amp. All we touched of the factory system was the HU. Huge difference in sound quality. We also added a Kicker 300x1 amp using RCAs from new HU, pushing a single 10 Dayton Audio in a sealed enclosure. He and I are both very happy with the results. But, I've been wondering how much better would it sound if we swapped out the old Bose speakers in the doors and went with something else. The issue is finding 2ohm speakers. I know Infinity had some that seemed to be a popular option amongst the GM owners, but it doesn't look you can find those anymore.