Audio Systems: 96 cavalier, stock stereo, chevy cavalier

Question
Exactly what is it that i need to remove to replace the stock stereo for a new one on a chevy cavalier 1996

Answer
This is for the Sunfire, but similar to install.
http://www.installdr.com/InstallDocs/GM/PDF/460025.pdf
You need an install kit, antenna adapter, and harness adapter.
All available from a car audio shop near you.
Follow up;
So what did I not give you that I deserved such a low rating?
The weblink is an entire article on how to do it yourself, and includes wiring instructions.