I just bought a Pre 64 supergrade in 375H&H.

The barrel has one spot of very light rust pitting on a one half inch by two inch strip. The bluing on the barrel otherwise is very good. The inside of the barrel is beautiful and has gorgeous deep rifling.
The original owner lightly engraved his social security number in the action by the chamber. (Groan) It's not deep, but you can see silver (I assume naked metal).
The original stock looks good, but has a narrow, but DEEP crack aft of the receiver that goes all the way through from top to bottom and looks apt to split all the way out with much use. Especially with a heavy recoiling round like this.
I want to keep this weapon desperately as the action is butter smooth and I think it a very historical gun. I also want to use it though and would like to fix it. Suggestions on how to handle the three problem areas above would be greatly appreciated. I would like to keep my expenses under $600 or so. I'm concerned about ruining the value of it by "fixing" the metal surfaces.
Thanks,
Conrad