I had been talkin to my brother and one of his friends about future modds. I decided that i would keep the stock cat back to keep the exotic sound and get test pipes, y pipe, headers, and an intake. My friend just got cut outs on his camaro and it sounds sick. My brother just told me to get cut outs with the open headers idea instead of the test pipe and y pipe combo. He states that i will get more hp becasue of the open after market headers. Which is the better idea the cut outs with headers and an intake, or test pipes, y pipe, headers, adn intake.