With the cost of sporturizing guns today, I'd suggest that you sell these old beaters and buy a new, or used rifle. You won't get much for your old rifles. Just to re-stock one will be $300 or more. Probably more.
If you want to have a nice hunting rifle then buy a nice hunting rifle. Go to a pawn shop or a gun show and search one out. You'll pay around $500 for a nice one, less for one that needs work. More for a classic. But your Mauser and Arisaka aren't worth much and will never look very nice. As some wise man once said, "You can't make a silk purse out of a sow's ear".
If you want to have a nice hunting rifle then buy a nice hunting rifle. Go to a pawn shop or a gun show and search one out. You'll pay around $500 for a nice one, less for one that needs work. More for a classic. But your Mauser and Arisaka aren't worth much and will never look very nice. As some wise man once said, "You can't make a silk purse out of a sow's ear".