Need a bit of help.............

Where the amp is or was in my cossie i have a plastic tray fitted there probably from a Sierra GL or something.....

anyway... I recently bought a spectrum analyser which i thought i would put there instead so I have taken the tray out and found the hole to be bigger than than the width of my analyser. The analyser is the size of a standard car stereo.

my question is firstly will the analyser fit in where the amp once was and secondly can I buy some sort of fascia plate to make this a neat job?

Thanks a lot,

Mark