goneglockin,
It's possible, I've put a Romy folder on my stamped MAK-90, see the MAK pic thread above for a pic. The trouble is, the screw holes are a little off. The sides of the folder mechanism need filed a little, also, since the Romy folder is for Euro 1.0mm receivers and the MAK has a 1.6mm receiver. Took me all of about 15 minutes with a file to get a good, snug fit to the receiver. If you decide to enlarge the tang screw hole a little, both screws will fit. I didn't do this, not wanting to mod the rifle till I saw if it liked it or not, and only put the rear screw in and loctited it. This leaves a small, about 1/32", gap between the folder mechanism and the rear of the receiver, also. So far, I've had absolutely no trouble with the single screw coming loose, if I do and decide to keep the folder on it I will enlarge the rear hole and put both screws in.
Overall, I like the stock. It locks up tight and gives you at least some semblance of a cheekweld. Looks badass, too. Give it a try, I think you'll like it.
Bub