Can't find a video but someone else discussed the possibility of changing out the speakers on their EX-T here: http://www.10thcivicforum.com/forum/26-electronics-audio-lighting/6770-ex-t-sound-system-upgrade-options.html
I have the LX and want to upgrade the sound also. I am thinking maybe you can just buy 6.5" speakers and use adapter rings
I replaced my front door speakers with 6.5's and they fit/sound beautiful. I wouldn't worry too much about trying to find 6.75 speakersI have the LX and want to upgrade the sound also. I am thinking maybe you can just buy 6.5" speakers and use adapter rings