I just scored this Waffen Werks AK-74 today. The quality seems to be top notch. Great rivet job, tight mag and perfectly straight sights. I've read a lot of good things on this AK but was just looking for some more insight on this rifle.
You just bought the rifle, why don't you tell us about it? What size group are you getting at 100 yards using the 1080rd spam cans?
47 and 74 furniture will fit as long as it is for a stamped receiver. Putting an under folder is going to get pretty involved, since it has the wrong rear trunnion for that installed. Might look into a Romanian / Polish / or E. German wire folder. Requires no modification to your rifle, and gives you that Com-Bloc folding AK look.
Here's a pic of a Polish one on my Tantal
A few things that come to mind is how hard would it be to switch this over to a underfolder stock ? Not sure if the trunnion would need swapped out to do this ? I plan on refinishing this wood but would still like to know.
Another option is to possibly just switch the furniture out with "Ironwood" stock set so will a standard AK-47 stock set fit this 74 ? Basically interchangeability is what I'm interesting in learning.
That Bonesteel folder looks pretty slick on them.