Nice 81. Almost bought one in 300Sav not too long ago.

The stock looks like it has been repaired in that area w/a slice. A piece added and matched well with the grain but you can see the verticle joint.
The top edge of the stock doesn't mate well with the receiver. The bottom edge is taking all the recoil with every shot.
It may have some bigger repair inside and needs a bit of re-inletting to reseat the rece'vr to the wood for a good fit. Fixing the crack at the same time will complete the job. Otherwise the crack will just return as the stock gets beaten hard on the lower edges again.

I like the Stith mounts on an 8 or 81. I'm not a fan of 'scopes in particular but if one shows up on one of these,,those old mounts seem to fit in for some reason.