I recall an article in Rifle magazine about the sporterized military Mauser as the Gunsmith's Full Employment Program.
Starting with a sound Mauser that has been Bubbafied enough to avoid the ire of the collectors, let's see what it takes.
Throw away the barrel. Who wants an 8mm? Besides, those vibration damping steps are ugly. Buy and fit a new barrel. Better check the feeding, Mauser had specific actions per caliber.
Gotta have a scope sight. Cut down clip hump, drill and tap, alter bolt handle, install Winchester style scope safety.
Install adjustable trigger.
You don't want to have to poke at the floorplate latch with a bullet nose, you don't want lock screws on your guard screws, you don't want a big broad trigger guard to jump in and out of foxholes with. Replace or heavily modify bottom metal.
Make and inlet sporter stock.
Wyosmith and a few others can really make them look nice, but there is a lot of work involved. By the time he gets done, the price of the action is lost in the noise. A friend here used to work on them. He was mainly doing target and varmint rifles and says it was a lot easier to start with the FN single shot.