got told this

[audiobahnuser18 5,000+ posts]

I got told this suggestion would this work or would it be better to go with a alternator?

You could get an alt if you really wanted one. Not to hard to find. Most local places around you can rebuild your stock one to get you about 120amps! However, I would suggest looking into possibly a small kinetik powercell. The HC600 is equal to 100 1farad capacitors. Hook it up parallel to your batt under the hood and you should have no problems at all. I run a Soundstream Picasso 2000D all day long on my stock alt! No voltage problems at all!!

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[helotaxi 5,000+ posts]

If you don't have any problems right now then you don't need anything.