Spend some time here Surplusrifle Forum • Index page
especially here Surplusrifle Forum • View forum - Sporterizing
Tons of information and valuable knowledge base. Also a great place to check and make sure you aren't hacking up a collectible that's worth lots of $!
MidwayUSA and Brownell's both have a lot of good parts. Biggest pick ups are trigger and scope base. EGW makes a good base that's reasonably priced and the Timney triggers are solid.
Find a good gunsmith to bend the bolt handles. Ask for some pictures of their work before you have them do it. That will give you an idea of what you want as well as show you what they're capable of.
Most stock makers inlet for the various Mauser actions as long as you know the model.
I built this on a Turkish Mauser action My latest
Mausers can make some pretty rifles but it can take a lot to turn a surplus action into a showroom rifle. There's a lot to prepping the action for scope bases, truing the action, lapping lugs and cocking cams and polishing and finishing.
Have you looked at building from a new action? Can't beat a Savage for value but they are definitely function over form. I've heard great things about Howa actions Howa Barreled Actions
and Husquvarna On Sale!
. Both are pretty reasonably priced and would probably be cheaper and less headache in the long run.
That said, taking the long road can be a very rewarding experience and there's something to be said for pounding a warhorse into a show horse!
Good luck and keep us updated!