Factory speaker was a 6x9. a 6x9 should drop right in.
Unless 2008 was different, it should have plastic "enclosures" that bolt to the door. The enclosure houses a stock 6x9, but if you have 6.5"s in it then you probably used an adaptor plate, like this:So you are saying that there should be no adapter? That it should just fit fine? I wasn't sure if the door was designed in such a way that you needed some sort of adapter to to match against any irregularities.