well, the pc's are pro-circuit platinum pipes.........they are my fav, and undisputeably the best lowend pipe from mild to wild builds..........however.....everything stock but pipes, they will shit on you.....they at least need a bit more flow to keep up, so it won't work as good......i wouldn't trust a pipe that claims no jetting change........the stockers are really choked down, but have a decent low rpm timing.......t-6's, ptr's sst's may work better and give you a more broad range, not just low rpm......dropping the gearing will really help you out, too. i would do that right away, then d3cide how much low you really want.....