73 Sport passenger mirror location ?'s

I can't give an exact measurement, BUT......I had the same problem on my Dart Sport.........When I installed the rallyes, I used the forward hole of the drivers side for a guide, and duplicated it on the passenger side.......I thought at the time they may have been offset, but I don't believe they're supposed to be....and there were no "sight" issues after the install.

My 74 Cuda was the same........no offset.......Same position on each door.

That's MY experience........Someone else may chime in.......hang on a bit for some more input........