Madasian87

hello everyone. im fairly new here and i was have had my first gen lexus gs300 since october. right now it has a 10 disc cd changer in the back and that is all. ive been to multiple places to try and get a sound system and they all tell me i need to rewire my entire system. i was wondering how much that would cost and what kind of wires to look for. i was also wondering where i can find a custom dash kit for my car. i do know that the factory sub is 8'' and i think i am going to put an aftermarket 8'' in there but i need to know how big my speakers and tweeters are. thanks for the help!!!