It's a 4 door.
I just went to Tweeter and they said they are 5", but that the bracket is designed to be easily cut to allow 6 1/2". I hope so. They recommended BA, but they are a little out of my price range. He told me that the Alpine bass output would be the same as stock, but just the highs would be better. True in a real car? (as opposed to figures, etc)