I really want to put a changer in my 91 RT/TT. I have considered an FM Modulated one, but am somewhat concerned with sound quality, and honestly, they aren't that much cheaper here than a decent deck (35w x 4) and changer combo. My questions are: How good is the factory head unit/ EQ? i.e. will an aftermarket system sound at least as good if factory speakers are retained, or will sound quality diminish? I also have available a Cobalt 5 ch. bridgeable amp, passive x-over, and a 10" bandpass box (sitting in my vette). Would it be worthwhile to install it to either the existing setup or the proposed aftermarket setup? I want to keep the interior fairly clean and roomy, as I also use the car as a daily driver (and lately spend a lot of time at Home Depot),and don't want to put a lot of $ into this. Any ideas / suggestions would be appreciated. BTW, nice site, Eric.