Thats an awesome set up! Bluetooth audio with steering wheel controls! And a really good price too.
With logic 7, though, you'd have to switch amps. Which would be a pain in the butt to wire, but would probably end up sounding better than stock amp. The Dynavin unit from what i understand is 4 times this price.
'07 328i-Saphire Black Murdeerrrrred-gone
'08 335i-Black on Gold.. work in progress!-JB3-DCI