I came across a Savage 110 at a store the other day at what I think is a reasonable price for a donor for a build. Based on the serial and information on another thread, it looks like it was made in 1963 (37XXX). My goal is to build a 6.5 Creedmore with it. It's currently a 30-06. I've got a few questions I'm hoping some of you more experienced folks might help me out with.

1. Are there any issues with re-barreling, re-stocking and re-trigggering an older model like this? Am I going to run into issues getting parts?
2. The safety on this rifle feels like it is a 2-position safety as opposed to a 3-position that I have seen on so many other Savages. Does that seem right for an older model?
3. I know I can use a short action for 6.5 CM, but is there any reason not to use a long action for it?

I appreciate any help that can be offered.