Ok, I have a '97 Catera and I want to replace the speakers eventually and put in an amp. I've read all over the site about the speaker sizes but they seem all over the place. Now, both sets of my speakers are in the doors (front and rear)........so has anyone replaced these speakers in their Catera that know what sizes both sets of these speakers are? I thought they were both 5.25 components but I don't think that's the case.