Hi Ragabob,
I bought some inexpensive Napoleon style black mirrors from a well known internet-based auction site, and used an angle grinder to take off the bit that normally sits inside the handlebars. I then used a long bolt to mount them outside the existing bar weights. IIRC, I put a star washer between the mirror and the weight to stop the mirror drooping (it hasn't).
Hope this helps, Tracendaz.