Sunvisor question

i think you are talking about the rearview mirror if so look at where it attaches to the window there is a small allen head bolt in that location if you look close. loosen that allen head bolt and slide mirror up and off...
 
Take your old sunvisors off...

Grab the the part where it mounts to the roof with one hand and hold the visor itself with the other. Pull the two apart. It takes a good amount of effort, but they should slide out. I then bought some from Mustangs Unlimited, and slid the mounting bracket into the new ones, and brand new black visors!