There are DVD-A head units out now but no SACD units.
I'm selling my old competition car now; 8000w rms daily driver. My new car I have now will be an SQL install inside a jetta with a carpc at the heart. I plan on competing for spl and sq which will be a fun and rewarding project. I have the alpine iva-d900 in my competition car and it has limitations so I'd much rather use a carpc. Lots of imformation at termpro's forums about car audio topics.