My 2005 G6 GT has the monsoon audio system and the speakers are going bad. The dealership will charge $90 per front speaker and $110 per rear 6x9 speaker. I can't find anywhere else where I can buy these speakers. I went to Best Buy and talked to a car audio expert and he said with the monsoon 6x9 I'd need monsoon replacements because of four wires going into it instead of one. I want to keep all of my monsoon as it will be cheaper most likely in the end and I'm perfectly fine with the sound quality for now but maybe in the future want to add a sub. Where can I find monsoon front and rear speakers that aren't going to be a combined $400? Also, would the monsoon amp be able to add a sub to it? Adding to that, Could I get a new amp and all new speakers while keeping my headunit? All I want is to keep the headunit the rest I'm open for any ideas. Any help?