Hello all, as my thread title says I am looking for advice to upgrade the sound system in my Regal. It has the base 7 speaker system that is all stock, a 3 1/2" center channel in the dash, 6 1/2" componet set in the front door and 6 1/2" mids in the rear door all of which are paper cone 20w 4ohm. It does have the cutouts in the rear package shelf for 2 - 6x9"'s and what looks like a 5 1/4" in the center of the shelf. I visited a local shop and they want to install an Audison AP F8.9 bit DSP/Amp and Morel Maximo Ultra speakers. The price they quoted was more than I walked in expecting to hear but a large chunk of that was the $1200 for the Audison. Comments/sugestions?