I have looked a dozens of mirrors and dont think they are made with the same job in mind, If you look at the iva expected line of sight for the side repeater lamp its supposed to be visible from the rear. All the mirrors I have looked at to date have most of the lenses to the front of the mirror, the bike ones are probably done like that to save having any other repeaters to the front, handy andy has his in the correct place according to the iva. It might be acceptable to put that type of lens on the end of the mirror though !!!!!!!!
