Eyeball, If you have the Mauser action, there are a few things that you will need for a Do-It-Yourself project. All the items can be gotten from Brownell's. You will need some kind of barrel vise, a .308 Win finish chamber reamer, and a set of .308 Win Go/No Go headspace gauges. You could go the cheap way and get a Shaw or Adams&Bennett barrel from Midway or some place, or you could get a good Shilen barrel from Brownell's, that is pre-contoured, pre-threaded, and pre-chamber. The chamber is cut several thousandths short so you will have to use the finish chamber reamer to cut the last little bit, after you have installed the new barrel in the action. You use the reamer to cut a couple thousandths at a time, then flush the chamber to remove the shavings, install bolt and insert the Go gauge. Repeat this as neccessary until the bolt handle closes on the Go gauge, then insert the No Go and try to close the bolt, it should not close. Then you have the proper headspace.
Another method is to use a Pull Thru Chamber Reamer. It uses the bolt's camming pressure to apply the pressure to the reamer. The reamer is turned by a mandrel or shaft, that is passed thru the bore. The thrust bushing rides in the bolt face and the bolt is closed
as uch as possible. The reamer is turn by the shaft until the bolt "drops" closed, and the headspace is set, to minimum specs, much like a match rifle"s chamber.
Of course you could always get the components yourself and have your gunsmith do it. You will probably need to have him blue the barreled action for you as a minimum, and you could have him double check your headspace at the same time.
As far as, stock go, you can pretty much get them in just about any style and any material, wood, laminate, and synthetic, semi-finished or drop in, from Boyd's to Fajen, from RamLine to McMillan.
Check out
http://www.brownells.com for everything you will need.