I still need to install my subs in my car. I have 2 JL12W3s with a 500/1. It's pretty powerful...a true 1000w is gonna be fairly serious (all relative of course) but not where you should need to worry about different alternators/caps etc
My only setback was the lack of wiring diagram to install my hi/lo converter. I was just gonna pay someone to do that, since I don't wanna guess at the wires doing it myself. I can do the rest of the wiring/install.