I have a 2004 tahoe with the stock alt and battery. Ive done the big 3 in 0/1 gauge wire and have 0/1 gauge running to my 2 farad cap. and same wire running from my cap to kenwood 7201 and 4 gauge to mtx thunder for my components. Im looking to upgrade my alt, but idk what size ill need. also would i be able to keep the stock battery or would i have to look into something like a kenetic added to the stocker? (I will be taking my capacitor out). I am looking to add a bigger amp to my 12s, something like the planet aduio ac 2000.2 sorry for the long post but this will hopefully be the last audio upgrade for my tahoe.