I think I have a "Tupperware" stock for a stainless classic 375 H&H here somewhere. Let me know if you are interested in plastic and I will look for it.
Thanks, VaHunter..... the rifle that I have has a synthetic like you descibed. I was hoping to find a wooden African Model stock that will fit the barrel profile.
Sasquatch, I'm not sure if the barrel profile is the same for the 300 Win Mag and the 375 H&H. Maybe someone will chime in with an answer.