Buy something of no historical value to experiment with but keep it intact, please
Offer it for sale you will get a lot of offers and then you can buy something good but of no historical rarity to experiment with
I have no qualms about wanting to do that sort of thing, it fun and interesing, just not on a rare one.
1903 and K98's were of little value until many were sporterized and changed. Making origanals more rare. Personaly I wouldnt buy such a gun to modify, but if OP and many others do than mine will become much more valuable.