The Bianchi's were made for J, K/L, and N frames. I have two K-frame revolvers so equipped, and a J-frame as well. They are very useful for turning an agency-issued gun into something more useful for winter pocket carry.
I have a Model 60 that I do not wish to touch the action on. It's the most accurate pistol I own. I have watched Wayne Dobbs and Darryl Bolke shoot a ragged nickel-sized group with it at 5 yards. I'm never going to disturb the innards on that gun. This makes for a great way to use it for parka carry in the winter.
You being from Up North, I'd hang onto them.
The other stocks look like an old set of Rogers Safariland grips. I like those as well. Let me know if you decide to get rid of either set.