The last thing you’d say the Hellcat-powered Jeep Grand Cherokee Trackhawk needed was more power because with 707 horses made from its 6.2-litre supercharged V8, that’s plenty. But not for Hennessey Performance.

The Texan tuner has upped the power on the SUV to insane levels. Thanks to its HPE1000 package, horsepower grows to a massive 1,012 at 6,500rpm.

It can propel the Jeep from 0-100kph in just 2.8 seconds. The package includes a 4.5-litre supercharger system producing 14 psi of boost, stainless steel long tube headers, a high-flow supercharger bypass valve, upgraded high-flow fuel injectors, a factory fuel pump upgrade, a high-flow air induction system and an HPE engine management upgrade with chassis dyno calibration.