We are happy to announce to that Northwest Dodge in its partnership with Hennessey has created a SRT8 with 600 + HP

Here is the what the modification includes... and this is just the starter level which I think is really great.
HPE600 S/C SRT8 6.4 Challenger-Charger
• TVS2300 Supercharger System
• HPE Air Induction System
• Custom HPE Pulley (5-6 PSI Boost)
• Fuel System Upgrade
• High Flow Fuel Injector Upgrade
• Custom HPE Thermostat
• HPE Engine Management Calibration (yes we cracked the code)

• Chassis Dyno Tuning
• Serial-Numbered Dash Plaques
• Serial-Numbered Engine Plaques
• Hennessey Premium Floormats
• Hennessey Embroidered Headrests
• Powered by Hennessey Engine Covers
• Hennessey & HPE600 Exterior Badging