I would have went for it. Lots of info on clones on here - what Joe says will free it up most likely. The clones fit in some Singer cabinets and cases:
http://www.quiltingboard.com/picture...p-t164361.html
and this is a pretty old post but fun - I would do just what Joe said first thing..
This is just for fun:
http://www.quiltingboard.com/vintage...r-t169127.html