Yasu Andrew, good to hear a ZR-1 is in Athens. I went to ACS in Halandri for high school in the 70's when my Dad was based there with STP oil treatment. If you decide to go back to the stock Bose, contact Dr. Don
http://www.doctordons.com/ He can set you up and answer all technical questions. I sent him my Bose head unit from my 92 ZR-1 and he installed an AUX input hard wired to the cassette line so now I can plug in satellite radio. I have it hidden in the center console so everything looks stock but sounds outstanding. Also Mark from Mirrock Corvette will be able to provide anything you need.
http://www.mirrockcorvette.com/
Good luck, welcome and keep us posted.