Bypass valves will minimize parasitic drain. Hit up Eaton's website and learn how it works.
Magna Charger manufacturers intercooled supercharging systems for late model GM and Ford cars, trucks and SUVs utilizing OEM quality Eaton hybrid superchargers. Here, read this too.
Supercharging will offer a broad torque band, what this car really needs.
Opcon's and the Eaton TVS are extremely efficient superchargers.