Ok, i'm in the same Boat, I went to audio shop today, they tested my voltage said i was reading 12 volts. asked me what kind of alt I have and told me I got ripped off and it's not pushin 275 amps. This, right now is true it is not anywhere near that amount of amps because why you ask? I don't have the alt charging to the Kinetic 2400 I have Kinetic running to stock, and my amp. My voltage was reading high 12's. I called up DC power and explained to them how the shop was tellin me i got ripped off, and it's not gonna blah blah blah, and he explained that I shot myself in the foot. So, to unshoot urself in the foot you need Ring Terminals, Run Power to the alt than to the cell battery, than Ground from the battery to the chasis or engine block, By doing this ur alt can put out the correct amp and you'll be blowing peoples heads off. As far as damage goes, I've had no problem with my car. by not having your alternator connected to anything your alt is trying to push out the power, but is unable to do so which is why they were only reading 12 volts. So, unshoot urself in the foot, get the neccessary tools, and get ER DONE.
I am so excited cuz I will be able to do hair tricks and shirt tricks with EASE from the trunk!