I just a read a post about you having a problem with your 370Z when it comes to a stop. I'm having the same issue. But in my case it only happens when my car is warmed up. I'll drive it and when I come to a stop every now and then the RPM's drop to about 500 and my voltmeter drops from 14 to almost 13 and goes back up to 14 and you can feel a slight stall. Not that bad but you can feel the car lose a bit of power. I'm bringing it to the dealer so they can take a look at it. It can be a bunch of things probably the IAC valve (Idel Air Control Valve). Let me know what your car has.
One last question. I'm real iffy on how I want my subs, look good an beat good. I think you said you have one 12" facing back? Does it look good in our little cars and I will be getting a w0v2 for now and upgrade to a w3 later. Cause like I said before joining this website I was thinking two subs 10"s would be better but im likening the idea of one 12" now