Cliff, I suppose you could do it that way, but it's much easier to seperate the arm from the base, than the head from the arm. In essence, all you need from the non powered/heated mirrors are the bases (sails technicly, the parts that attaches to the door), nothing else.
In the begining, I found a guy who worked at one of the mirror plants, we tried to buy (even in quanity) the sails, but the company wanted nothing to do with it.
Rob