Classic Ford cars with a standard interior came equipped with a non-prismatic inside rearview mirror. Traffic behind you will blind you even if that person isn't running their high beams. Switch to an automatic dimming mirror like this aftermarket Gentex unit and the excess light striking the rear view mirror at night will be discarded before it reaches your eyes. This unit even features a compass and ambient thermometer. It attaches to the stock mirror arm and is easily wired for power. We found it for $238.95. If you don't want an aftermarket mirror, then you can still get the manual prismatic mirror that was optional back in the day. It is far better than one with no prismatic function at all.