The tuners are ready to boost the 3.5-liter V6 from the original 456 to 608 hp. The necessary increase in power will be provided by a modified control program, a revised intake system, an optimized supercharging, improved cooling and a more efficient exhaust. From Hennessey, the crossover can accelerate from 0 to a 100 in 4.8 seconds, driving a drag distance of a quarter mile (402 m.) in 13 seconds. In addition to modifying the engine, American tuners have lowered the Navigator’s suspension and installed new wheels with other tires. Plus in a circle were installed more efficient brakes of the Brembo.