FWIW, while driving home from work the other night, I noticed that the door mirrors on the Chrysler Crossfire could be considered appropriate for a 40.
They appear to extend further outboard than RX7 items giving potentially better visibility and are electric controlled. They also look reasonably compact and not quite as bulky as the "new" mini mirrors.
Another thought was also the mirrors from the MX5 (Miata)
They appear to extend further outboard than RX7 items giving potentially better visibility and are electric controlled. They also look reasonably compact and not quite as bulky as the "new" mini mirrors.
Another thought was also the mirrors from the MX5 (Miata)