Removing stock stereo from 91 century

I've been working on it for about 2 hours and I haven't got it out yet and now I'm stuck, I have to unbolt the stereo to get it out but one of the bolts is behind the rear defog/map light mount thing and i can't get that off...? anyone care to help?

to pop off the rear defog/map light panel, u need to take off the 2 screws to the right of the radio and it is somewhat hard, but pull on the top of the panel and it should pop right off.