I'll try to answer your Q's
1) Quite easily
2) yes I have not had any problems
3) this is the kicker, it effects the previous question tremendiously. I'll take some photos of mine sometime. The only time the sun is a real issue is if I have my sun roof open, or I have a pessenger with a white or other light colored shirt. The reason is.. the light comes from the outside, reflects from the other shirt, bounces off the screen and to your eyes.
4) different? I would have changed the angle of which I installed mine. to eliminatre the passenger problem. I would take a mirror and sitting in your seat andjust it until it is reflecting to the darkest spot possible (roof most likely).