I know you've done the Auto CAD but are you sure that this will actually work?
1.)Have a look at the competitors in the Morgan race series and ask yourself if they are using a similar arrangement and if not why not?
2.) The bracket needs to be attached to the body in at least two places to give it some rigidity. With the weight of the mirror on it its just going to act as a pendulum and at speeds above 60 mph, it will be vibrating so much as to be useless.
3.) Not sure where you are located but if the mount is made from 2mm plate, there's a Construction and Use or MoT issue as it will be considered a sharp edge likely to injure pedestrians. Possibly you could get away with a bit of clip on beading. Ditto the exposed threads for the mirror mount. Maybe a nut cap or something similar here?
Arwyn
