...well, I figured it out. I'm going to drill my own 5th hole, install my mirror with the stem and call it original : )
Hey, got to have some humor in here.

Now, would someone tell me if that 5th hole is exactly between the top two holes. I'm read to drill.

1937 Chevy Pickup
In the Gallery
1952 Chevy Panel
In the Gallery
More photos
1950 Chevy Coupe
Pictures!

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile