Sharp Shooter Supply is good, check out their barrels, you can install a barrel yourself with a few tools. Here's a site to check out for stocks bolt handles, recoil lugs, etc. Stockade Gun Stocks - specializing in custom rifles
I've got the prarie dog special and the "elk stalker" thumbhole is on the way. Here's a pic...
Bell and Carlson
has a nice line of stocks called medalist, with aluminum bedding block wide forend etc.
Here's a site with some good practical info on savage rifles SwitchBarrel.Com
You have a rifle that's very easy to upgrade, Shilen makes savage replacment barrels for $305, I've been very happy with mine, in good conditions it'll shoot 1/4 MOA out to 500yds and 1/2 MOA to 800yds. There are guys here that target practice 1 mile (1760yds) and beyond, if you want to get into long range shooting you've come to the right place.