Until just a few years ago basically Savage rifles came in only one length. Long.....they accomodated shorter cartridges by using a filler in the magazine and a stop block on the bolt. The old ones are all long and were designated Model 110, 112 or 114 and used the same basic parts. The newer short action guns are Model 10, 12 and 14....there are probably others as well.
Savage rifles are extremely user friendly and can be rebarreled and or fitted with after market parts by just about anyone with a basic gun knowledge. If you choose to change to a different chambering the process is very simple if you aren't changing headsize cases.
Sharpshooter Supply, Midway, Boydsand others sell all kinds of parts to build a Savage including triggers, tools, bolts, bolt heads, springs, stocks, magazines parts etc.