I looked for a carbine butt stock for a very long time and never saw one for sale. I ended up making two before I found you can get semi finished ones:

http://www.gunstocksinc.com/web_pages/Plate-pics/Stevens-stocks/Rifle-stocks.htm

The butt plates are next to impossible to find, but a re-popped one for a Winchester 1894 SRC is very close to identical.

I have a rifle ( crescent ) butt stock with a small repaired tang crack and butt plate I might sell if you're interested.