These visors use 3M double sided tape to stick onto the door frames.
They're decent quality and good value for money and the fit is quite good. Given the dark color of the plastic they don't stick out like a sore thumb when applied to the door frames.
I got this from a buddy on the MPVCLUB forum....Mazdaspeed02MPV....His name is also Anthony and I had no problems with the transaction. I'm sure he can hook you up with a set of visors for your '5'. After you install them we'll once again be 'identical' twins...
Regards,
Anthony