This obsession with factory original specs and finish borders on unhealthy sometimes. Your gun choice is a common, low grade field gun, of which ten thousands must have been made. If not a high condition collectors safe queen it can be easily replaced. If you restock it, the original is removed and stored for the next owner if you want. You are not talking about adding a vent rib, porting the barrels, putting in screw in chokes, making the forcing cones four inches long, adding an adjustable comb or putting a white line or Morgan adjustable recoil pad on it. You just want a functional stock.
It is better to invest in one custom stock than buy and sell a dozen guns looking for one which works for you. And with your need for extreme dimensions the factory stuff was never an option. If it were me I would look at adding a second set of barrels to get as much versatility out of it as you can. A 28 & 30" or a 26 & 30" combo set could cover just about every shooting need if properly choked. Then your custom stock becomes almost your everyday, what ever the need, double set with perfect fitted stock. So if you are looking at two-three grand think outside the box and add another grand for extra barrels.
