The answer is no... dont ruin your rifle trying to make it into something that ist isnt. There is the SKS-D SKS-M that takes factory ak mags. You may want to try that route if you must have a high cap.
Could anyone tell me if there is a hi-cap mag. that works well in a sks
I would agree with the guy who said to find an SKS that is made to accept AK magazines. I'm sure you and many others are well aware that there are SKS's made with AK receivers on them built to take AK mags. Buddy of mine has an SKS with a 40-round banana clip on it.