How does mine has a big hole where the stereo should be sound. I know the clock has pressure clips holding it in so I would asssume the stereo does as well.
I know as well there are 4 screws holding the facia around the stereo in but of course 2 are under the clock and 2 are under the stereo. then there are the spring clips which hold the rest of the facia in place. (mine is and was glued into place in pieces:( )
so really Im not much help unless you look at section 4-5 pdf 5-4 of the vortex manual
here
TOONGA