I picked up a 240Z a few weeks ago that came with 300ZX mirrors mounted on the window frame via ugly plates. I'm in the process of removing the mirrors/plates and replacing them with OEM chrome mirrors. Whatever holes that were on the doors previously have been plugged and painted. Can someone tell me the positioning specs for the mirror? Maybe a video that shows the process? Thanks!

Hi, I don't know the dimensions but.. with a little mirror you can probably see the old holes were the mirror should go! Wind down the glass and i think you can see the (closed) holes were the mirror ones was.

My 240z has no orig. mirrors so i wouldn't know.. would be nice if someone could tell were the 2 holes are measured from the edge of the top rail thingy.. 🙂  Maybe with a picture of it.. with a measuring tape on it.

Base of the mirror centered on the concave channel and 6 inches from the front edge of the door.

Hope this helps.