has one been released yet, the only one i know of in development is at www.ultimate-racing.com And would a twin turbo be better then a supercharger(i know endless debate)
Muscle Mustang and Fast Fords tested www.turbochargedpower.com 's unit on an engine dyno. It made 500hp/529lb-ft trq at 6.2 psi, 578hp/617lb-ft trq, and at 11 psi it made 624hp/666lb-ft trq. A turbo is far supierior to a supercharger, just much more expensive for the kits. BTW MM&FF did a test of a bunch of sc and turbos a while ago to compair the results.