Thanks for the help. I decided to go with the stone guards from CA. Expensive but unique. Edgar is right, they only work on flat lenses! Just happens I had a set. Here is a photo of how it turned out. bob [img:center]http://facebook.com/photo.php?fbid=49271...e=1&theater[/img]
I used the standard stuff but with stainless guards. Small plastic zip ties secure them th the spring clips which are drilled / fitted to the headlamp rims. No problems whatsoever with retention