I have acquired a savage center feed short action with the top bolt release that I am planning to turn into a heavy barrel varmint rifle. I was looking at Boyds stocks and I thought I would order the model 12 CF pro varmint with bull barrel and blind mag. I was thinking that I could just order magazine box, spring and follower for a model 12FV. Will this work? I was looking at the schematics on the numrich web site and those appear to be the only pieces. Let me know your thoughts or if there may be a better way to go.