Depending on how mechanically inclined you are, the Jackson can be done on your driveway. The Hahn, I've heard, is best left to either Hahn, or Bob Stockum. The tuning required puts it out of most peoples DIY range. That being said, I think the SC is a joke. The gains are ridiculously small and adding more boost is a bitch. The Hahn has infinitely more headroom to grow, as your power needs demand it. Yeah, it's pricier, and more involved, but a better kit and bigger gains than the SC. Just my 2 cents....
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