Unless I am mistaken, your scope has a 30mm main tube, so you'll need rings that are 30mm. Vortex has a couple different style rings of which I prefer the precision matched rings. These particular rings are manufactured for Vortex by Seekins Precision
, who also sells the same exact style rings from him web site. Compare prices and availability from different places and they'll be about the same.
As for a scope base, I'm not as familiar with Savage actions. I would suggest using a picatinny spec rail but this isn't completely necessary, you might be able to find a two-piece base set-up out there somewhere. In either case, I'm almost positive you'll need a 20 MOA base with that scope to get the .308 out to 1K.
So in a nut shell, my suggestion would be to find a one piece 20 MOA picatinny rail that'll fit your action and then find some 30mm rings that will attach to a picatinny spec rail. This isn't the only option, just my personal suggestion. We have some of the Vortex rings in stock for the 30mm scopes if you are interested.