Check E bay, they have a few stocks for sale. https://www.ebay.com/sch/i.html?_fro...LH_TitleDesc=0
Good luck with the restoration, those are fine old .22's!!
Numrich also sells original stocks and forearm that require final fit and finish. https://www.gunpartscorp.com/products/764610
You would also need any hardware, like butt plate, screws, etc.