Fairlight-CMI

Here's a dumb question...

I'm thinking of embarking on a silly project - I've got one of the
IIIL motherboards and an old IIx chassis that I keep meaning to mess
with.  It would be really interesting to recreate one of the old IIILs.  

Obviously the RAM boards aren't going to be all that hard to come up
with, but what about Channel Cards?  Can these be found?

It seems that every few years I think about getting this out and
working on it.  Any comments?

Tim