As mentioned in the other thread, I would keep it all original. I would also use it as well as it could be used and leave it at that. Once restored or at least fixed up, you will have a well desired, all original truck that you can at least get some use out of it. It may even surprise you.
But to add a little extra, I would not depend on it for everyday general use. Even thoroughly modified, I still would not want to use it in harsh everyday conditions, especially in your heavily trafficked area that can have harsh winter conditions to boot.
My opinion anyway, lol.