I don't know, Roger. It sounds like you've got yourself in a bit of a delima!
Yikes! How many times have we read, on these very pages, the derogatory comments by the enlightened ones forever condemning those that commit the sin of restoration! After all, any restoration is creating a fake, done only for monetary gain, etc, etc.
An old beat up clunker gun Must at all costs be left in its beat up clunker condition to preserve its history for future generations!
So on one hand, restoring it would be a fraudulent act done solely to deceive, and take advantage of the unwary.
But on the other hand, robbing the already stripped down stock of its remaining parts could be an act of desecration on your part!
At this point, now that you've brought the stock to light, you'll be condemned by someone no matter what you do,,,, even if you do nothing!
Personally I don't think every old gun needs to be restored, but I don't have anything against it, nor do I believe that every old clunker needs to be kept intact to preserve its history.
Post some pics of the old thing.
If it's a big, wide, slab sided thing like you describe, then rob off the old furnature and reuse it, then sell me the old stock (just don't ask what I'm going to do with it!).
If on the other hand its an identifiable rifle, definitely rethink stripping it down.
John