Tom (at Speedwell) alluded to the fact that he carried the identical raydot mirrors that moss carries (that is, he sources them elsewhere--they are not original speedwell designs is how I interpreted it). I opted for a more classic all chrome (and thinner) look found at VB. I, too, refused to drill holes into the new body and paint work, so it will be going through the windshield pillar hole.
Jack, I think you and I are running almost parallel in our build. I think I am just a bit ahead of you...but we are thinking about the same things at almost the same time...