In all honesty mate fender mirrors are over rated and are more of a pain in the ass then they do good, sure they look 'cool' and its jdm as ʞ©$ɟ bro!! But in all honesty your going to be spending more time re adjusting them from when you park your car at the local super market, and people bumping into them, and if people aren't carefull they could possibly snap them off.
And the last thing I would want on my car would be someone snapping my only mirrors off my car