You might be interested in looking at this site about raw feeding written by vet Lisa Pierson
www.catinfo.org which includes a 'recipe' for a balanced diet. If you wanted to feed a 'prey model' diet, this site is good
www.rawfedcats.org and you don't need a grinder for that.
Another way to do it is using already minced (or chunks of meat is better for their teeth) meat and add a powder supplement to it to make a balanced meal - such as Feline Future Instincts
http://www.felinefuture.com/ - again, no grinder needed.
There is a great rabbit meat stockist online offering bone in minced and bone in chunks
www.woldsway.co.uk and if you wanted to feed 'whole prey' (not for the fainthearted!) this site is good
http://www.frozendirect.com/shop/home.phpI feed prey model sometimes, recipe (not very often as I only have a hand grinder and its hard work!) as well as Intincts, and other recipes from the Holisticat site
www.holisticat.com , alternating with some pet shop cat foods like applaws, natures harvest, forthglade.