IronKnees,
Are you wanting to keep the action original/unaltered or is it okay to drill and tap the action for a scope?
I've converted a lot of Mausers throughout the years and they're worth the hassle and expense if in good condition - even the pre-98s.
Unless you're trying to keep the action unaltered, you'll need to drill and tap the action for the scope bases. There are "no drill, no tap" mounts out there, but they are an ugly funky solution.
Brownell's gunsmithing supply has everything you'll need either way, along with a price guideline chart for various gunsmithing services.
To properly drill and tap the action really requires a jig or a mill. It can be done by hand, as a last resort, but chances are it'll be messed up. You'll need to alter the bolt handle for scope clearance too. This requires cutting off the handle and welding it or a new one on.
The old pre-98 Mauser actions are fine, and, if in very good condition, worthwhile to scope. Stick to lower pressure loads - don't try to stoke it to the max.
Rocky