You can get Savage Competition recoil lugs, a barrel nut wrench, Competition trigger, and some mighty fine stocks from Sharp Shooter Savage Specialities....ask for their catalog, ....their e mail was: email@example.com
I have had some really fine custom rifles built based on the Savages, and in fact, their has been much discussion as to why they tend to shoot so well. Specificially, it seems to have to do with the bolt design and the lugs ability to center up, or rather, even out the force on the recoil lugs as opposed to a conventional bolt. This, I think, is partly why companies such as Gre'-Tan Rifles, have concentrated their efforts with conventioal rifles, to center up the bolt and minimize play however the Savage system does this by design (has to do with the way the Savage bolt is designed).
The really nice thing about the Savage system, is that you have the equivelant of a switch barrel gun. Buy your barrel, and install it yourself, or put what ever barrel you want on......a much lower cost system I think overall....and yes, they will shoot!
Issues like what to build on are discussed endlessly, but do yourself a favor, and find out what you can do with your Savage....then decide......