Sony makes an X-plod 1" Tweeter that would probably fit in our stock holes -- They show them in their component systems, but I've yet to find them by themselves. I'll have to do a little more searching. There's only one thing I'm going to hate about having the X-Plods, and that's covering them up. They are really sharp looking. I did have one question: If you use the speaker grille that came with the X-Plodes, and you install the speakers flat, in the rear deck, won't the Woofer collect bugs and dust and junk? Seems weird.