The ZT/ZTT 385 is the Roush Charger
The ZT/ZTT 400 is the Kenne Bell Charger
The X500 is a Vortech
The ZT520 (Dreadnought) is Normally Aspirated
There are no R75V8s with a SC.
At the flywheel mine (KB) is 410 PS, 434 ft/lb, 0-60 4.7 Seconds.
Under perfect conditions Max out at 183 MPH.
Roush
KB
Vortech