Howdy Stinger,
When I had my `66TR4A; I had (3" dia) chrome bullet mirrors mounted on ea. door. They were quite sleek and compact looking vs. the "Std 4"dia". Now, Try and find them.
I had a `59 Bugeye that I had mounted "Raydot" mirrors on ea. door & looked Great. Their Alum, Lightweight and easy to mount. Moss sells them for $65.00ea. If your interested; I`d just check the Dia. before buying.
I`ll be putting them on my `65TR4 when I get to that stage (Not for awhile). TR3 comes first.
Have Fun Shopping,
Russ