2007 Jeep Grand Cherokee Limited Sport Utility 4-door 5.7l on 2040-cars

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Watch this 650-hp Hennessey Jeep Grand Cherokee go from 0-60 in 3.9 seconds

Hennessey Performance Engineering has created an HPE650 package for the Jeep Grand Cherokee SRT fitted with the 6.4-liter Hemi engine. When it leaves the showroom floor it has 470 horsepower and gets from 0-60 miles per hour in 4.8 seconds. When it leaves Hennessey's garage floor after the upgrade it has 650 horsepower - 530 hp at the wheels, according to Hennessey - and gets to 60 mph in 3.9 seconds on its way to running the quarter-mile in 12.6 seconds.
There's more than just a Roots-type supercharger bolt-on, with ported cylinder heads and high-flow headers among the many changes made to the engine. You can watch this pre-2014 facelift silver model prove its spec sheet on the drag strip in the video below.

Jeep going bigger with new Grand Wagoneer, smaller with sub-Renegade?

The headlines are still rolling in for the new Renegade that Jeep unveiled at the Geneva Motor Show last week, but already reports are surfacing, citing sources within the company, about what Chrysler's iconic off-road brand will do next.
Speaking with Auto Express (whose reports we tend to take with a grain of salt or two), Jeep chief Mike Manley suggested that two courses of action are currently under consideration at Auburn Hills to develop two very different new models - one smaller and one larger than anything Jeep currently makes.
One plan would be to make an SUV or crossover even smaller than the new Renegade, although it isn't immediately clear what platform it would take. The Renegade (pictured above in Trailhawk spec) will be built in Italy alongside Fiat's upcoming 500X, but uses a heavily modified platform. We figure the smaller model, if approved, could base itself on the new Fiat Panda Cross.

Chrysler readying 20 Moparized vehicles for SEMA

The Las Vegas Convention Center has plenty of space for aftermarket companies and automakers to show off their wares, and it looks like Chrysler is taking advantage of the spacious floor plan. At next month's SEMA Show, Chrysler will have a full 20 cars from its six brands decked out with Mopar gear.
As a hint of what is to come, Chrysler released a handful of teaser sketches showing glimpses of modified Jeep Cherokee, Ram 1500, Fiat 500L and Chrysler 300 concept vehicles. The automaker will also use the venue to show off a new line of Jeep Performance Parts offered by the all-new Mopar Off-Road Division. In addition to the images, Chrysler also issued a brief press release - posted below - breaking down some of the "industry-first features" that Mopar has offered in recent years.