I purchased a supercharger used and its a saleen and its black. The guy said he was pretty sure it was a series 2 but when i talked to saleen they asked what color and i said its black and they said it was a series IV, but when i look on the internet at series IV pics the nose doesnt match mine, mine actually looks like the series 2 nose and has one bolt holding the pulley on, but the pulley is small like a 2.5 or 2.6" pulley. Im confused now as to what blower i actually have..