One important question: Is this fired brass or run through a machine that heats it up to pop the primers? If the later is true then it's pretty much useless except for scrap. I would ask that question of your supplier before you place your order.
I think you would have to weld the stock to the receiver as well. Otherwise you'd be able to to remove the welded up stock and put a regular folder on there. I would definately ask for a letter of clarification.
I think he meant Iron Wood the company that makes AK stocks, not the actual wood. I'd like something that will look the closest to the original IMI in grain and color. Very interested in an ARM set with the "core exchange" option!:hit_it