I asked the same question recently, I was told that they are a little heavier than a standard carbine stock. Someone recommended Fulton Armory for Carbine stocks.
Wenig has garand and carbine listed in their 2007 catalog. I have purchased 2 semi inletted you finish them stocks for my Browning Gold shotgun. Gave plenty of meat to work with for a great fit.
They will fit your stock if you send them the gun, personally I would only do this if you where getting some high end wood. There standard wallnut on the shotgun stocks is strong and of good function