How do I replace the old cd player in my Ford Fiesta Zetec for a new one?

Is it possible to remove the old CD Player in my Ford Fiesta Zetec 2002, and replace it with a JVC KD-G421, even though the old CD Player is big and is built into the large frame surronding the old CD Player?

Here is a picture of my Ford Fiesta' current CD Player and radio formation:

http://groups.msn.com/piresgoalliverpool/shoebox.msnw?action=ShowPhoto&PhotoID=1

You can see, that if i tried to remove my current CD Player, i would have to remove a very large amount. Is this what normally happens with a Fiesta, and therefore is it possible for me to put a new JVC in, which of course is much smaller, and slimmer. is it possible?

Thanks,
Chris