I've got an old sks D Carbine model , in parts on my bench..been there for years...someone didn't like it..rusted to crap! , would have had the thumbhole stock( if anyone know where I can get one) it would be good for display....you could maybe rebarrel it...but where the clip go into the receiver...is pretty rust up....I've had a couple of SKS D over the years...the Norinco ( wrong spelling?)model and the chinese military, model...I think your better off to buy a Russian one, and have it converted over to AK mags..if thats what you want...
There use to be a company that made conversion kits to run AR15 10 shot pistol mags..but I don't know if that loop hole has been closed...if it still legal? If so, you had 10 rounds on hand..the only true way to get more then 5 rounds legally out a rifle..and it may not be legal now..it's been years... the Russian built rifle..I think we're better built..steel and finish...but I'm only going by the ones I've owned.
Cheers
B