DeMan Motorsport 4.0L GT4 is complete and dyno tested! 403HP at the WHEELS! and 340FT/Lb of TQ at the wheels! The package consists of 4.0L stroker kit, 82mm Throttle body, Headers and appropriate DeMan Motorsport in-house tuning on our Dyna Pack dyno. An X51 package will be coming soon as well.
More information can be found here: GT4 Upgrades