($293,000) The heart of this upgrade, sitting beneath custom-made carbon-fiber covers, are two low-inertia, ball-bearing turbochargers operating at a maximum seven psi of boost, and producing a staggering total of 738 hp and 532 lb-ft of torque. They also throw in professional installation, dyno tuning, road testing, an air-to-water intercooler system, new lines, pipes, and Hennessey exterior badging.