Replacing Passager Mirror

I had my mirror broken on the passager side of my 98 Intrique. Looking at the the mirror holder which wasn't broken there are 3 screws holding it to the arm at the bottom. Does anyone know how to remove these screws as the one is so close to the door that I can't get a regular T15 screwdriver to remove the screw. I believe you have to take the whole arm off from the door to remove the mirror housing but don't know how to do it.

Thanks in advance
Jetsitter

I went to the dealer to see if I could just buy the mirror itself without the housing but he didn't tell me how it attached. He told me there was a cross piece that clip on if you need it you have to buy the hold housing which $160 plus. Can any one tell me how the mirror glass is attached and why I would need this cross piece to attach it? The motor part ls okay and it doesn't look like anything else is damaged just missing the mirror.

Jetsitter

Go to an auto glass place and have them cut/get you a new mirror and glue it back on, if'n it's just a broken glass. Otherwise see a junk yard.(auto recyclers).

To get to the inards of the mirror it needs to be removed from the car and played with