I have a Chinese SKS (milled receiver not stamped) and like you, wanted a better stock than the OEM wooden one. I bought the TAPCO M4 6-position synthetic stock. No cutting or burnishing was needed. The instructions that come with the stock is clear and sufficient for just about anyone to change the stock. The stock is Type Certified by the BATFE to be legal to use.
I also have the 30 & 20 round TAPCO magazines that are great. They work better than any other magazine that I have bought for this carbine (over 30 different ones).
The SKS Carbine is now a real pleasure to shoot and it looks great!