Single In-Dash can be installed with an adpater. I got mine froma guy on ebay, but I think it's a Nissan part. IIRC, someone even figured out what the part number was, the guy that sold me mine, cut most of the Nissan part # tag off the harness and the bag, but left it in the bag.
I'm not sure, but think the later (standard Double DIN) Bose 6 Disc In-Dash changer will fit/work as well, but missed out on that due to slow bidding. I see tham at times on ebay for $200-$300. A bit steep, but you shouldn't see any of the problems you're getting from the 10 yr old unit.
FWIK, The Clarion and the Sony used the same 16 pin (only 14 wires??) connector to attach. Might be worth having Wess take a quick pic, when he gets a working camera.
One last note, JESDA - find a way for us to feed the digital signal in through the changer jack/plug on the back and we'll have a winner

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