Not necessarily a vortech, but the kit gets its name from the guys at Modular Power House....im getting my Mongoose installed right now as we speak
If you're talking about the VL series positive-displacement supercharger from Vortech, it's a twin-screw design with Vortech's input and is manufactured in Sweden by Lysohom. Very good stuff.
http://modularpowerhouse.com/product_info.php?products_id=194&osCsid=66abe5febf82099cc115334d74942e21 this is the kit ......they have multiple types w/ dif chargers
You already running the PI Heads? They dont make the KB's for NPI's anymore Look into Tork-Tec as well, alot cheaper than KB and are getting just as good of numbers.
That place seems very overpriced, keep searching a bit more, you mat be able to find something less expensive, their tuner kit for the vortech is over a grand more than i was quoted by another shop
The Mongoose kit was the shizzle for many years because of Tim's tunes. Tim has moved on from MPH and is now doing Dodge and Mustangs but still selling the 2.8KB kit and that thing is a monster.
For the price of the KB 2.8 I will sell you my PI FRPP Blower Kit, Fox Lake Stage 2 PI heads and CMS St 2 Blower Cams