Do it and don't look back. You have to hog out a little wood from the inside trigger area of the stock but nothing that is visible externally. A Dremel with an end mill bit works perfect.
I did it to mine and it truly changed it to a MOA shooter. Sub MOA once I mounted a scout scope and started reloading for it.
There is no real history or great value with a Yugoicon so your not desecrating an important antique.
Also not to take anything away from the fact that Yugo's seem to have the worst triggers of any variation of Mauser rifle ever built so you'd be doing it a service for sure. Bill