I would like to upgrade the quality of speakers in my 4000 Q. My prefer to keep things as stock looking as possible. My thoughts were along the lines of a quality 5 1/2" or 6 1/2" speaker like the Infinity for the rear deck. What will fit back there? How about the speakers in the dash? I understand they are hard to change. Anyone done this? Any tricks? what fits? Bruce Bell bbell@csn.org