I about had it with my stock system. I mean it's not that bad, Nakamichi Premium System, but then I know it only sounds good cause the interior is so quite (Lexus). So out goes the stock headunit in favor of an Eclipse AVN5435 Pic. This fine thing will feed the signals to a JL Audio e6450 6-channel amplifier Pic. Sadly I won't be able to upgrade the stock speakers at this time because these 2 pieces is already setting me back about $2000. But my plan is 5.25" or 6.5" components up front, 6.5" coaxials in the back and 10" free air sub. Damnit, my car is such a money drainer.😀