Dan, the extractor bevel can be easily changed for push feed. You just need a gunsmith with some experience.
Mausers are still being sporterized and customised in large numbers. Just visit MidwayUSA or Brownells to see all the goodies out there.
Some of the most expensive custom rifles
are built on Mauser actions. It still holds alot of attraction as a classic.
However, for the money spent, a used commercial or even new Savage will be much cheaper and have higher resale value.
Saying that I have two Mauser projects about to start and numerous other 'customs' on Enfield P actions. They are a lot of fun to play with.