Once you purchase it, remove the thumb/butthole stock as they are stupid and uncomfortable. Next check and see if you have a "slant cut" receiver. If not you can buy any AK furniture and go with it. If so, then you'll have to buy specifically designed stocks for slant cuts.
these are from iron wood...notice the rear is at an angle.
You can also buy buffer tube style stocks as well as ace folders with an internal block. I believe ace made or is making a block that fills the gap left from the slant cut, though i've seen people run a standard internal block with no issues except a small gap from the slant.