I just bought a 04 v6 and i have a couple of questions. I want my v6 to sound really nice and deep. I figured a complete exhaust from the engine back would do the trick but i heard that adding bigger pipes to a stock v6 would cause it to loose power. Is that true? I also wanted to know if i got longtube headers would that be legal in cali. Once i figured out what parts i want to put in, where should i go to have it done. I live in cali in the san fran valley and want to do it right but dont want to pay too much.