I know the Weatherby Vanguards and Howa's fit the same stocks, but have no idea how much work it would take to make it fit in a Sako stock.
Last month I ordered a McMillan for my Howa. McMillan offers many stocks that copy other manufacturers stocks and can inlet a stock design from one rifle to fit the action of another. After talking to many others the advice I got was to order the Sako classic stock, but have it inletted for my Howa. There is a 3-4 month wait for a McMillan so It will be another 2-3 months before my stock comes in.