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Build your own: 2017 Jeep Wrangler Willys Wheeler

While still three weeks from the start of summer, it arrived in practical terms with the Memorial Day weekend. And while the country will have worked through its collective hangover (from too much food, drink and shopping) and gotten back to work, it's worth remembering what – automotively – got us here, preserving both democracy and personal freedoms. The CJ-inspired Jeep Wrangler got us here, and in its Willys Wheeler guise the spirit of America rolls on. As the many spy pics have shown, FCA's Jeep division is working hard to replace its current Wrangler within the next few months. With that, we say goodbye to 10 model years of Wrangling with the current model. And that decade has been a good one for Jeep. Despite the economic downturn between 2008 and 2010, Jeep and Jeep Wrangler sales have been consistent bright spots for FCA, along with – of course – Ram trucks and, uh, Ram trucks. With a new Wrangler around the bend, it's worth taking a look at the existing model. And knowing an all-new example is coming, what would be the reason – if shopping – to consider what's on dealer lots now? Despite the numerous areas of improvement the new model will deliver (in efficiency, refinement and safety) , there's something to be said for a vehicle 10 years into its production cycle. While this is wholly anecdotal, for every step forward a manufacturer makes with a new vehicle, the added tech and necessary complexity seem to mandate two steps back. In an Audi A4, tech would seem a good thing, while in a Wrangler, this Jeep enthusiast would see it as a mixed blessing. Almost 80 years into its evolution (the initial Jeep concept came together in the summer of 1940) little has changed in the Jeep's essential mission. A body-on-frame architecture transports a driver and up to three passengers over paved and unpaved surfaces with credible confidence and a modicum of security. Live axles front and rear enhance the Wrangler's off-road capability, but compromise its on-road behavior. And while a significantly wider track mitigates rollovers, the Wrangler is decades removed from "state-of-the-art" when discussing safety or handling. Currently there's but one engine available in the States, a 3.6 liter normally-aspirated V6 producing 285 horsepower at a you'll-rarely-get-there 6,400 rpm. Connected to either a six-speed manual or ($1,400) five-speed automatic, the engine moves the 4,000-pound (loaded) Wrangler with measured confidence.

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.

What does Jeep have cooking with this stretched Cherokee?

Chrysler has been spotted testing what appears to be a stretched Jeep Cherokee prototype. Which seems odd, considering that Jeep already makes a Grand Cherokee, and that's an entirely different model. The question then is just what the company has in the works here. We don't know for sure – but we do have some ideas. We're anticipating a new Grand Wagoneer to serve as the brand's flagship model, but stretching the Cherokee's wheelbase to leapfrog the Grand Cherokee's would take more than eight inches – and stretching a "compact" platform to get there wouldn't seem to make a lot of sense. Alternatively Jeep could be looking to wedge a new model into its lineup in between the Cherokee and Grand Cherokee, potentially offering a third row of seats and wearing the Wagoneer name - sans the "Grand" - as part of a new range of seven-seaters. Just what the point would be, however, when the Dodge Durango already offers three rows based on the same platform as the Grand Cherokee, is a bit of a mystery. Another possibility is that it's not a Jeep at all, but rather a Dodge. The brand is in need of a replacement for the current Journey, and we're also waiting to see what FCA does to replace the Grand Cherokee since it unveiled the Chrysler Pacifica to replace the Town and Country. More of a crossover approach could take the Cherokee's Compact US Wide (CUSW) platform as its starting point, but stretched like this prototype to offer more space. Whatever it is, we're sure this won't be the last we'll have seen of it, so watch this space. Related Video: