I just looked at www.gun-parts.com and on their Winchester stock page a little past half way down they list "semi-finished" stocks for model 69s. Don't know whether that would work for you but maybe worth a look especially if you don't mind putting you own favorite finish on a stock.

IMHO the M69 is a mighty fine rifle and extremely accurate. I've had more than a few over the years and hard pressed to find a better one for the money.

Hope you find your stock.