If it original and in decent condition I`d leave it ALONE! These are getting hard to come by in other than beaters. If it`s "in crisis" [and it sounds like it isn`t] then there are several places that make good custom stocks. Notably Royal Arms in Montana and Trebone in Idaho. There are others but those are two I have used extensivly over the years and have been treated well. Remember when altering the stocks that sights are a possible problem so think ahead! Good luck.
Aloha, Mark