tried some zx10r orig equipment replacement mirrors off ebay and like them
the downside is they are a little too short height wise with the limited adjustment to provide similar rear view mirror views as stock [you can see up close but not far behind you without bending your head down]. the screws are not very long so washers for added height are not really an option.
other small note is that the mirror base is not hte same dimensions as the stock fairing impression, only noticeable to the owner of the bike really.
too run the signals wires, you need to drill a thrid hole through the rubber grommet; there is already a thrid hole in the fairing
upside is they look great, they fit the bike perfectly. they are a bi-metal and not cheap plastic like stock, very solid. they also fold inside in a more practical manner. gone is that cheap plastic rubber boot on the bottom too. they stick out horizontally far more than the vertical stock ones
i took a comparison picture of one stock, one new installed on the bike, but the sun washed it out