KPM Motorpsort has been a fixture of Hot Tuner since the very first time we assembled the country’s leading tuners and let them loose in the interests of science.

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Straight away, KPM impressed us. You may remember that big, burly, ever-so-purple VE Commodore that turned up at Hot Tuner 1 to scare the kids and outrage pensioners. So, yeah, MOTOR and KPM have some history.

This time, KPM was back with a Mustang. Now I know the Mustang is the big must-have at the moment. It’s fast, it looks great, it’s new and it’s the future for fans of Blue Oval performance now that the local shop has shut its doors for the last time. But when KPM has finished with a brand-new Mustang GT, the results are not likely to be for the faint-hearted.

Hennessey Streetfighter Ford Mustang GT rear

The modifications are the guts of what’s called the Hennessey by Streetfighter HSF670 package. According to KPM honcho David Roscio, the Hennessey gear got the nod simply because that’s what his customer (and the understanding owner of the car) ordered.

“It’s a customer car and the customer wanted a Hennessy package,” Roscio explained. “So that’s what we’ve built him. But using a Mustang as the base makes lots of sense. It’s simple and clean in its looks and it’s effective in its output. I really like the simplicity of the presentation. And it’s a straight forward package… it does what it says on the box.

“The other thing worth mentioning is that our package is fully ADR-compliant, and there’s a three-year, Australia-wide KPM driveline warranty.”

Hennessey Streetfighter Ford Mustang badge

The price of $15,890 includes the installation, all the gaskets and fluids, the badging and under-bonnet identification plate and, of course, that all-important ADR-compliance certificate to keep in the glovebox for when you-know-who wants a chat.

If you have a bit more to spend, you could pony up for the option package which gets you a Hennessey 132mm throttle-body, Hennessey airbox, Streetfighter oil breathers, ceramic-coated headers, high-flow cats, lowered suspension and an even bigger injectors. All that will add another $8000 to the price tag.

But as seen here, that lot will get you into the realms of KPM’s claimed 3.8-second 0-100 time and, in perfect circumstances, a quarter mile in a mid-11. Like we said at the start of this, we didn’t actually get a representative time out of the KPM ’Stang, but seat of the pants says a lazy 12, with very definite 11-second potential.

Hennessey Streetfighter Ford Mustang wheel

SPECIFICATIONS Drive: rear-wheel Engine: 4951cc V8, DOHC, 32v, supercharger Gearbox: 6-speed manual Suspension: struts, anti-roll bar (f); multi-links, anti-roll bar (r) Brakes: 380mm ventilated discs, 6-piston calipers (f); 330mm ventilated discs, single-piston calipers (r) Wheels: 20 x 9.5-inch (f); 20 x 10.5-inch (r) Tyres: 285/30 ZR20 (f); 305/30 ZR20 Pirelli P Zero

PARTS AND PRICES Supercharger kit: $15,890 Exhaust: $4935 Handling pack: $2732 Wheels/Tyres: $7340 Total mods cost: $30,897 Vehicle cost(mSrp): $57,490 Total cost: $88,387