Need some help on this. Replaced the stereo and door speaker in my trailblazer with a pioneer head unit (tuner only no cd) with jvc 2 way speakers and ran new wire but doesn't sound so good. Is there any speaker component system that sounds good in these? The factory dash tweeters are not hooked up wich may explain the lack of highs but I'm sure there is some setup gor these as far as 2 or 3 way speakers for these trucks with new tweeters. Any suggestions?