I'm going to replace the stock on my LVSF 221 fireball as I don't care for what is on it at the moment. What is the value roughly of these stocks?

2nd question- I have a Mcmillian Classic inletted for a short action 700 sporter contour on the way. I know the LVSF is a mag contour. What's the chances of the Mcmillan I have on the way fitting the LVSF?