I added one to my 66. I like the balanced look but the mirror doesn't do much for function. I should try a fish eye stick-on. It might help. My 70 still needs one. Someday when I feel like drilling through the paint. LOL
Passenger side mirrors on cars with wing vent windows always seemed oddly placed. Too far forward you can’t see much in them and probably can’t open the wing vent fully, too far rearward they look strange. Is yours in the way of the vent?