"your gonna have just about as much $$$ into it as you would haveing a smith fit the 338 barrel and its gonna look cobbed."
I know some don't care for the looks of the barrel nut on a Savage. I'm not one of them, and I think PacNor's nut looks fine.
I would assume that barrel makers doing pre-fit Savages would do the same with Rem threads instead. Prices on pre-fit Savage barrels are cheap now days so for ~$300 including the nut you could rebarrel.