Where can I purchase a new replacement synthetic or laminated stock for a pre-64 Winchester Model 70 .375 H&H rifle ??? Also, will the stock be a drop-in or will it require fitting ??? Thanks.

Try McMillian at www.mcmfamily.com. They have a nice stock patterned after Griffin & Howe stocks. Not sure about prices but they are of good quality.

Try Serengeti Stockworks (formerly Acra-Bond Laminates). They have some really beautiful laminates. I just ordered one from them for my pre-64 300 H&H.

http://www.accuratereloading.com/ubbthreads/showflat.php?Cat=&Number=530215&page=1&view=collapsed&sb=5&o=21&fpart=1

http://www.acrabondlaminates.com/