are mauser stocks interchangable

[soonerfan66]

Again helping a friend with a k98 .  This question is about the stock , I don't think it is for this rifle . The cross bolt (hope that's right word) on the stock does not align up with the holes in the stock quite right . There are small hair line cracks coming off the holes on both sides . And the tang is right up against the backside of the wood and also has a hair line crack come off it . Is this meaning the stock comes from a other model Mauser rifle ?.