Infinity Center Channel

My buddy has a 2000 Galant (I think), with the upgraded Infinity audio system...he just blew his center channel, and i'm trying to help him out with replacing it. Can anyone give me a size, directions on getting to it (looks like you just pop out the screenplate with a screwdriver), and maybe somewhere for an aftermarket or stock replacement. Thanks!

-Steve

Mine blew on my 99 GTZ. went to the an audio system place, got one for $90 installed I think.