Others companies have built super-charged and turbo-charged Challenger & Viper vehicles in the past...so why can't Chrysler offer something along these lines.
Twin Turbo HPE800 SRT8 Upgrade
HPE's legendary claim to fame rests in the astonishing numbers and record-shattering performance of our twin turbo Vipers. Now the thrill of raw twin turbo muscle is available for your Hemi-powered SRT8!
Power:
800 bhp @ 5,400 rpm
The HPE800 Upgrade Includes: • Low Compression 426 cid Stroker Motor
• Twin Ball Bearing Turbochargers
• Stainless Steel Turbo Y-Pipe
• Single 44mm Wastegate
• Front Mounted Air-to-Air Intercooler
• Polished Inlet Tube with Blow-Off Valve
• High Flow Cylinder Heads
• Polished Intake Manifold
• HPE800 Camshaft
• Upgraded Fuel Injectors
• Stainless Steel Exhaust System
• HPE Engine Management Calibration
• All Necessary Gaskets, Fluids & Hardware
• Professional Installation
• Dyno Tuning & Road Testing
• Hennessey Red Valve Covers
• Hennessey Premium Floormats
• Hennessey Embroidered Headrests
• Hennessey Gauge Cluster
• Serial-Numbered Dash and Engine Plaques
• HPE800 Exterior Badges
• 1 Year / 12,000 Mile Limited Warranty
Optional Upgrades Include: • Lightweight Wheel & Tire Packages
• Coilover Suspension & Brake Upgrades
• Clutch, Flywheel & Shifter Upgrades
• Automatic Transmission Upgrades
• Performance Axle Shafts
• Polished / Coated Intake Manifold
• Exterior Graphic Kits
• Interior Upgrades
• And More
http://www.hennesseyperformance.com/...8-upgrade.html