Part of me says "manual" and part of me says "remote"!
The install guy part of me is the one who says... manual. The user/driver guy part of me is the one who says.. remote.
In the end, I suppose remote as long as I can figure out the correct mounting location for the interior adjustment knob.
I need a passenger mirror for 78 Newport. It does not have one now, but I want to add it. Driver's side is the rectangular style mirror. I'm not sure... but I think a later-model M-body mirror might possibly work (anybody know for sure?).