How big of an alt will I need?

[SlickCMRick 10+ year member]

Ok, 2005 nissan sentra, 80 amp stock alt. 2,000W for my system. Amps produce 240a of fuse if that matters.

I was thinking a Kinetik HC 1800 in the trunk and a Kinetik HC 1400 under the hood.

I can't fit any larger battery then an 1800 in my trunk. I dont listen to the system with the car off either, so will these even help me or am i wasting my money?

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