I don't really post in here but I saw the title of the topic. Please allow me to offer a bit of further insight into this. I am a big Comanche fan so I know a bit about this helicopter, and others like it, too.
The Ka-58 'Black Ghost' is entirely fictional, but it has caused a lot of both confusion and controversy, as Kamov is said to have given permission to use their name in the design. The whole hype and hysteria has been made worse by the fact that many model websites that stock it describe is as "... the real life Russian stealth ground-attack helicopter."
However, having said that, Kamov are currently experimenting with a design that looks very similar in appearance to the 'Black Ghost'. I can't really tell you much more about it as this concept is not widely known about, very little info about it is available publicly, and the majority of the deeper info I have about it has been given to be in absolute confidence.
To answer the question posted above, the 'Black Ghost' surely would have had Vikhr in the internal weapons bays, just as it has on the stub wings - assuming it uses the same concept as the Comanche, with Hellfire able to be loaded in the bays and on the wings.
See the page about the 'Black Ghost' on my Comanche website, for the limited further info that is available on it, plus more pics...http://digitality.comyr.com/Comanche/arc/ka58.htm