Subframe is at the welding shop. Ivan has cut a piece of aluminum to triangulate the ear the mirror mounts to. I don't think it's feasible to remove the studs from the mirror, from what I've heard they are a T shape. Easier to simply weld a small extension on to the existing stud. Chamfer the edges, TIG it, done deal. I found some extensions at the local hardware store.
Regarding the stud length? My studs must be shorter than the rest of you well endowed studly FJR owners. I have just enough length to catch a couple of threads, no excess at all.
I'll post pix up tonight if I have time..