Welcome to the Brotherhood :-))

Yes, it can be done, if You are a "Bondo" guy, and other ways. But, IMO, the only value Your stock has, it is light. If You add a bunch of stuff and make it heavier, that value goes away.

There is a thread somewhere on this site where a guy totally rebuilt a Stevens 200 stock with Bondo. And I have installed an AR grip on one.

But My advise would be, just bite the bullet and get the Boyd's stock of Your choice. You'll end up doing it in the long run anyway.

No matter what We do with a Tupperware stock, We still have a "Sow's Ear" ;-))

Good Luck...Jim