As standard it should look like this

(not the standard stereo in this pic)



there should be a small cubby hole under the stereo.

If you take the front panel off

(2 screws above the heater controls and 2 clips at the botttom) underneath should be 2 metal brackets that are secured with 2 screws each and hold the stereo and cubby hole in place.

hth.

Jimi