I have been checking some out, and wanted to know what is the real differance in the jackson racing (roots style) and the vortec. Obv they are completely differance. but what advantages do each have over the other? what kind of power levels can be made with either? would 350-400 be a long shot (within a reasonable price). and where do you think turbo;s are better. yeah a turbo can make more power, but a daily driven 350-400 hp car.