[Mosin-Marauder]

I own a Mosin Nagant M91/30 which I love immensely . I have spent many hours tinkering with it and making sure everything ran as Smooth as possible. I am now looking into getting an SKS, as the design and hardiness of these Russian Battle Rifles Amazes me.. I would like to get one that hasn't been modified in any way and has all matching serial numbers. So how hard would that be? And are the generally accurate rifles? As far as battle rifles I mean? Are they worth the cost? If someone could answer these questions I would appreciate it. But all advice and insight as helpful aswell.