[factorystock]

There good, but they have the age old problem of the blind spot. They block your line of vision momentarily. They require extra rolling time to see whats on the other side. Obviously, the problem of switching to a different mirror is dealing with extra holes left in the door. May or not be a problem if the vehicle is under going a restoration and the body shop could fill up the holes. IMO, the ideal mirror, was the optional "bus type" mirror. Because you can see above the mirror, you have much less of a blind spot. Not mine, a vintage photo. They require no less than 6 holes in door. I believe there was another plate on the inside of door for a solid mounting.