A very simple solution to limited visibility on the right side is to purchase a round convex "fish eye" mirror from a local parts store.. Most of the round style will be approximately 4.25".. Remove the double stick tape from the convex mirror and glue it over the original mirror using clear silicone.
I always look for a mirror that has a metal edge in lieu of a black plastic edge..
The convex mirror will provide full vision on the right side. Some distortion will occur, however, that is easy to overcome..
I've used this type of mirror modification on many older vehicles, early Ford V8's and F-100's. works every time.
The attached pix are of the mirror on the right side on my '39 conv cpe.. The mirrors are after market "Swan" mirrors.. I did not like the looks of the door pin mirrors. I utilized the mounting holes for the accessory wind wings to attach the custom made mirror mounts..