My GT came with the stock 4 speaker setup and I have been shopping around for a new head unit, front speakers/tweeters, rear package shelf speakers and subs/amp. I am too lazy to install them myself since it has been a good number of years since I have installed audio components (probably around 10 years or so). Are there any places I should avoid? Chain stores for example? I have a Best Buy and Tweeter close by, but I am not 100% confident with them. Since I am the type who likes to do it myself, can I do it in a weekend or am I better off just searching out an auto audio specialist?