I am thinking about adding a pair of the sun visors sold by MGMagic; http://www.mgmagicclassicmotorparts.com/windshield-sun-visor-pair-mg-or-gazelle-ssk/
and am wondering if any of the London Roadster owners out there have added them to their car and how well ;i.e. easy and neat they are to put on.
My main questions are how they clear the channel the roof slat and how it is to drill in to the window frame.
My biggest concerns are they might interfere with the roof slat and risks of cracking the windshield.
Any other tips are appreciated.