When you rate the power capabilities of a turbo you always have to stay on the conservative side. We rate our Super B for the dodge at 450hp, but it is regularly used to 550hp. This kit is not just a turbo. There is a new turbo, mounting pedestal, oil lines, electronic foolers, not to mention over a year of R&D on this product. We are definately not the most expensive and the only one that carries a factory Borg Warner warranty.