I believe
Picatinny is the word you are searching for. Some .22 scope mounts have a tendency to walk or slide along the dovetail grove. Many have had good luck with a one piece mount like this:
http://www.amazon.com/UTG-Profile-Ai...2lr+scope+base
There are also red dot scopes already made to mount to a rimfire like this:
http://www.amazon.com/Tasco-22-Rimfi...2lr+scope+base
You can order a regular wood stock from Savage, I don't know of any other aftermarket stocks. RimfireCentral.com is another great resource.