Yamaha CS80

Hi all.

I've been seeing these kits lately:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270523835109

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270523309766

Anybody know about these? Looks like it could be a good idea - or an easy way for someone to really mess things up :)

David