techincally speaking,
Would it be possible to buy a Valmet and change the stock + barrel/gas system assembly for an AK one, with the proper NR barrel length, and therefore stil have a non-res Valmet with the appearance of a true AK?
I'm sure it would require a fair amount of smith work for the barrel switch, but is it doable?
The receiver is the legal part so yes it's doable. No different than a Galil or M76 conversion. Just a whole lot of money.