After seeing a Vortech supercharger on craigslist, I couldn’t pass it up. Vortech is probably not my first choice in Superchargers but the price was right. Be warned for others that choose to buy something like this used. You have to get it for a smoking good deal, because it will be missing small parts that were left on the car that you don’t notice until you are installing. We got the supercharger installed a few days before the track day, still actually working on tune. We also installed a Invidia Q300 catback. Very quite. Probably too quite for many, but I love a quite car on the street. So far i’m very impressed with the system and looking forward to getting it track tested.