Responding to make it a straight stock: there's not enough wood behind the pistol grip to do this.
Also, if you can't live with it the way it is, or you're a stock maker wanting a to upgrade or restore, then move on. To have someone restock it (price of wood & labor), then color case harden, bluing, you'll be waiting years to get it back & probably be into it 2-3 times more than it's worth. Use your money wisely & buy one that's in nice original condition. There's lots of them out there.
Here's some photos of a project VHE that I upgraded to a AHE. But I had the wood & I'm a stockmaker & had a working relationship with the engraver. But in ordered to make it worthwhile you need to be either the engraver or stockmaker.
Threaded Mode