I checked my resources and it appears that at different times Winchester sold the "Winchester Model 670", "Winchester Ranger Youth Model", and "Winchester Ranger". All are discribed as having a non-detachable box magazine. It appears they all had hardwood stocks.
The main difference in the Winchester Model 670 seems to be a 19 inch carbine barrel, a 22" sporting barrel, and magnum calibers had a 24" barrel.
The M70 Winchester has a 3-position safety, while the Model 670 has a 2-postion safety.
When in doubt make a phone call to the manufacture of the stock or the supplier. You might go to the manufacture's web page for more information.
Siskiyou