gmcvideo,
Not to discourage you, but finding any FCR1411MK3 Systems (or its components) could be an especially tough search. (as the unit was originally sold back in the early 1990's.) So you might try looking at Craigslist listings for areas around the Gulf of Mexico, South Florida or the Mid- Atlantic States. You can also call any Furuno Dealers within those areas, they usually have some information about any used units.
Good luck in your search.
-Deep Blue