Well if your kitties are currently eating dry only, chances are they won't go for the raw food right off the bat so you might want to try slowly switching them from the dry to canned to start and then incorporate the raw.
Here is a link on Switching foods that is very helpful. It helped me to successfully switch my boys from dry to canned.http://www.littlebigcat.com/index.ph...switchingfoods
Also check this one out, it talks about the importance of eating canned/raw in lieu of dry:http://www.littlebigcat.com/?action=...needcannedfood
This particular article was *pivotal* in helping me make the switch from dry to canned:http://www.catinfo.org/index.htm#Tra...o_Canned_Food_
So your Munchkin already loves the raw, that is fantastic! Are you giving it to him plain or are you adding vitamins etc. to it?
Just for your information, Rascal took to the canned food relatively quickly, much to my surprise, but Samson wanted no part of it. The smell just turned him off and he wouldn't even eat his dry if the canned was near his bowl. But now he is eating the canned
So those articles should be very helpful, but if you have any questions or need some further advice please don't hesitate.