Got some upgrades done. Replaced the stock dual mufflers with a pair of thrush turbo mufflers with some nice rolled-edge stainless tips. The result was exactly what I was going for: deep growly tone down low, not super loud up top and it doesn't sound like a rice cannon. Also put sound deadening in the front doors along with some infinity reference series component speakers. Swapped the factory flat sail panels with the wrx tweeter pods and modded them to accept the infinities. Ordered a kenwood excelon 6.2 inch touch screen head unit with built in GPS, bluetooth, backup cam etc and a set of co-ax infinity reference series door speakers for the rears with enough sound deadener left over to do those doors. For lows I have a single kicker comp 2 600 watt 12" sub in a sealed enclosure with a power acoustik gothic series 600 watt amp bridged at 2 ohms. If the head unit's 22 watts rms doesn't drive the door speakers to my satisfaction I'll run an alpine 4 channel amp off the pre-outs and run bigger wire from the amp to the doors... All in all it should be a decent system. Not audiophile quality but for the money it will perform well. Should have it together and running in about a week.