If your car has never had door mirrors, i.e. there are no screw holes, make sure you realise that the ones that you show here are mounted differently. The ones that have the arm pivot at the front allow the quarter lights to be reversed when driving for cheap A/C the ones with the arm at the rear do not. One type mounts from the outside with self tappers and the other have bolts that have nuts attached inside the door. The later means you have to take the door cards off. Both types can be mounted behind the strip between the quarterlight and the window but this isn't a very good choice.
Buy either type from Eric. Support the "little" guys.