So you fine folks that have upgraded your headers..... Where have you gotten them. And are you happy. I will buy myself a set in the next 2-3 weeks, and travel to Denver, with performance in mind. The trip will be documented in a thread here. It will include some airbox testing..... DJ pc-5 with Auto tune.....headers.......video's and pictures. In house at Sisneros Speed Works....... boy oh boy oh boy... This'gonna be fun.