The new system sounds great. It doesn't have the same boom that I am used to with a pair of 12's, but that was to be expected. I may add another 10 on the opposite side, down the road.
Here are some updated pics (sorry I haven't cleaned it recently):
Cover under driver's seat with some ventilation holes. The PDX is digital, so it shouldn't need the ventilation, but better safe than sorry:
The sub (JL Audio Stealthbox)
The subwoofer control knob: