Great thread......all I have to add is... I went with the rectangular ( chrome backed ) from the original round ( black back )but they have much more wind resistence at speed and the whole bracket shakes.....blurred vision....drives me...well you know! I might go back to the round flat driver's side and convex passangers side. It's not so much of an issue as the burb has lots of windows.
Don't think the west coast mirrors would work on my 63 suburban.
EB's 63
