Doody,

It is definitely doable. I've done it on the 596 and 598 for friends. That was back when you could get the serializer chip pre-mounted as a development board from the manufacturer (National Semiconductors).

The C-Cubed chip is the Ziva-3, if memory serves me correctly...

There are still some active threads on AVS for this topic. Perhaps someone there can help you?
http://www.avsforum.com/avs-vb/showthread.php?s=&threadid=47128

Regards, Peter