HENNESSEY Performance has quite a reputation in the US as a tuning house to be reckoned with and its latest creation is a Mustang with more wild ponies under its bonnet than John Wayne ever saw.

It’s a twin-turbo kit that lifts the 387kW in a standard 5.2-litre ‘Stang to a mind-blowing 735kW, or virtually double the power.

John Hennessey calls it the HPE1000, the numbers indicating 1000 horse power (actually 985, but close enough).

GT350R Hennessey White 25 1But apart from inviting a handful of US motoring writers to watch the HPE1000 bellow down a runway in Texas and to let them take a peek at the two huge hairdryers and see the two howitzer-caliber exhaust pipes, he revealed no more.

And there must be a lot more to it, but you’d have to buy a kit to find out.

He also makes kits for various other brands, including Corvette, McLaren (yes!), Dodge, Jaguar, Jeep, Lamborghini and there’s even a Cadillac Escalade – a big 2800kg wagon – that has the edge on hotties like Nissan’s GT-R.

Hennessey claims to have been born with a passion for speed and fast, fun cars.

His early racing successes, driving a modified Mitsubishi 3000GT, convinced him that he could turn this passion for racing into a successful business venture.

He started modifying imports out of his garage in 1991, but that soon morphed into building 1000-horsepower twin-turbo Dodge Vipers that gained international recognition.

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Mind-blowing twin turbo Mustang


Bill Buys, probably Australia’s longest-serving motoring writer, has been at his craft for more than five decades. Athough motoring has always been in his DNA, he was also night crime reporter, foreign page editor and later chief reporter of the famed Rand Daily Mail. He’s twice been shot at, attacked by a rhinoceros and had several chilling experiences in aircraft. His experience includes stints in traffic law enforcement, motor racing and rallying and writing for a variety of local and international publications. He has covered countless events, ranging from world motor shows and Formula 1 Grands Prix to Targa tarmac and round-the-houses meetings. A motoring tragic, he has owned more than 90 cars. Somewhat of a nostalgic, he has a special interest in classic cars. He is the father of Targa star Robert Buys, who often adds his expertise to Bill’s reviews.
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