Here's my take on the supercharger scene. A Paxton/Vortech must have a $1,200 Circle D. A TVS does not. After the smoke clears they both cost about the same. The Paxton/Vortech would require me to butcher up the front of my '12 GT. A Procharger does not. OTOH I don't care for the location of the Procharger air filter. I guess at this point I am leaning toward a TVS of some kind. The easiest TVS install is the Magnacharger. That one seems to be limited due to it's inlet configuration. My needs are 600-650 RWHP. I have not found any info as to the kind of HP the Maggie makes at 10 lbs of boost. Any thoughts would be appreciated.