I would wait to you have your entire system installed to see what kind of strain you're putting on your charging system. If it's still weak then get a nice big alternator. I don't really care for caps, they're just bandaids really.
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Ill say i go by His and Al's thoery of "Your getting sprayed" Doesnt matter what it is. Grandma in the 1982 LTD is gettin the bottle.