What I can see looks real good, especially that Sauer barrel. I'm assuming that the bolt #'s match the receiver and the bore is as clean as the outside. At the very least, you have an excellent shooter. Everyone seems to be looking for better or correct parts to upgrade their rifle and consequently WWII parts are getting scarce. Any parts that you find would add at least as much as they cost you in value.

Configuring this action to SSR is doable but likely to be very pricey. There are some replica bases and mounts out there, but since I haven't built one I can't offer much in the way of recommendations. A proper looking, even postwar European scope, would escalate your investment rapidly.

I do have a '42 dated Sauer stock if you decide to proceed with at least putting it in 98k trim. If interested, advise, and I'll send you a PM or separate email with photos and price for further consideration.