In my rig I got a set of 4x6 speakers for the front super cheap open box clearance at WorstBuy. I also picked up a few weeks later the set of shallow mount matching rear pioneers. I would have left my fronts alone because the stock tweeters and woofers in the front arent too horrible, however one of the two tweeters died and it wasnt worth finding a replacement. I however suggest if you should do the same path I did with the fronts, loose your door speakers. You will get alot less distortion that way.
My current config is a Pioneer DEH-P7200HD with HD Radio and USB
Pioneer 4x6 G series 2 way coaxial in the dash
Pioneer 5.25 G series 2 way coaxial in the rear doors. These will fit, but take a little more time to install. No modifications necessary, but a 6.5 would fit better. For $25 though, I wasn't going to argue the size.
Bazooka BTA6100 - Works great, but I did it again I would shoot for the BTA6250D, 250w Class D amped tube. The 6100 is a great stand in for the missing tones from your factory system or from the after market stuff above. I connected my tube using the RCA cables because I am an audio nut after all, and I wasn't going to let the little amp in that sub be my crossover and that little bass dial be my only control for the sub level. If you do get an aftermarket head and the bazooka I highly suggest this. It gives you much better control over the blending of the speakers via the head units build in crossovers, sub woofer level control and also allows you to turn the sub off should you have passengers in the back seat that might not want the low tones coming into their backs and ears. This came in handy when a buddy was back there who had a headache, and one time when I had to bring my friend, his girl, and the baby (sleeping) home in a car seat back there.
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