Don't fix what doesn't need re-fixing. If the gun is functioning well and the stock looks good, Leave. It. Alone. But I'm pretty sure you've already decided otherwise.
JR
An LC Smith stock that has 5 pins through the wrist is very likely on borrowed time. If you are always distracted by the notion of perhaps having a two piece gun (again, it would seem, from the OPs commentary) as you are pulling up on a fleeing pheasant, it will effect your shooting. It isn’t the original stock, collectibility likely isn’t a concern.
Fix it, or get rid of it.
Best,
Ted