the speakers are designed to be near each other. Unless you have some type of delaying equipment and EQ'ing (1/3 octave or parametric) ability, you will run into timing issues. Now, everyones idea of "sounds good" is different, but no pure audiophile would put there tweeter there without some type of the previously mentioned manipulation. Realize that if your going to have your mid range in the doors your imaging is going to sound bad anyway. If you want good imaging (keep in mind the z is one of the worst enviroments for imaging) get speakers in the kicks. Mine are made custom and will cost you about 400-500 for a quality job but well worth it. Especially if your into true Hi-Fi sound reproduction. Without getting into all the technical aspects of why component separation leads to funtional anomolies just realize either you put them flush in the door or suffer with the bad sound.
