I have a KDS V3 kit (P/N 57001-1687A). It will work on any Concours-14's up to the current 2014 models...at least as far as I know. I've connected to a 2012 C14 with no issues.
Bought mine on Ebay for $299. It was almost new, I expect from a Kawi dealer that had closed. I had to load newer software, and had to purchase a newer com cable ($60?) for the 2010-up C14's. The newer version KDS probably comes with the newer software and com cable(s), but you can get that stuff separately if need be.
I would watch Ebay closely...they do pop up from time to time.
Cheers,
Rem