My "stock" answer is to go with fiberglass rather than tupperware of plywood, and the best available fiberglass stock that is available inletted for a Mauser is McMillan.
From the McMillan Bros site . . .
MAUSER INTERARMS MARK X
This classic style stock has a straight comb, and a small cheekpiece with some cast-off. The forend will accept custom barrels up to a #5 contour. It has crisp checkering appropriate for a classic stock. We offer completely finished "custom-drop-in" stocks for the Interarms Mark X action only. We do have inletting programs for most of the various FN and 98 variations, but because of the many styles of bottom metal custom bold handles and safeties, we do not offer pre-finished drop-in stocks for them. We only offer 95% inletted blanks for gunsmiths to finish fitting and finishing, or we offer full installations in our shop.