Thanks guys I appreciate the input, I was thinking of going with secondary battery. And as well thinking of running the a second amp for mids and highs. But anyway thanks again for the input.
I have a 10' RF Punch sub (1000w) and a Kenwood 1000w amp on the stock alt and a new battery. Lights dont dim unless i have the boom turned way up. Thats with headlights on also. But at average or "let the car next to you hear it" its great