turning yugo wood stock into an underfolder ???

Like the title above, can it be done ?

Only if you demill the fixed stock trunnion, weld up the old rivet holes and then drill the new rivet hole locations and the 6 holes for the underfolder pivot bolt and locking lug pin holes. You will need the underfolder trunnion and mechanism. If you are an exoperienced builder not too difficult. If paying a builder figure $250 -$300 with parts.
There is an adaptor for an ACE side folder that can be purchased.
Probbably better to sell it and buy a folder Yugo.

man, that's gonna cost me "gulp". Thanks, but i'll pass on converting it. I love this thing too much to sell it. It's definitely a shooter.

Go for the Ace folder.

It's a better (though not at "authentic") option.