My car is in the shop and I can't get this measurement. What is the spacing between the mounting holes for the outside mirrors?

If you're doing this for the passenger door the nuts are welded inside the door. Punch through from indide then drill carefully from the outside.

If for any other reason ..... never mind.

30mm (1 3/16 ish)
Went and measured two bare doors, early and late....same.

Gary...what bandjoey said !
Use a small punch that will slip nicely into a 6mm nut, gentle tap will do it. You will need to snap your door card (interior panel) off, and use a small hammer.
Marty

I have already poked the holes on the passenger side. i am looking for some new mirrors. I am a little tired of the droopy stock look...also want something in black.

Perfect, just what I needed...Thanks!