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An inside look at Mopar's SEMA fleet

Mopar is heading to the SEMA show in Las Vegas with a fleet of customized vehicles that appeal to enthusiasts of all stripes. There's a Dodge Viper ACR concept that follows in the lineage of the supercar's great road racing past, and a custom Ram ProMaster that might just be the ultimate outdoor party machine.
We got an inside look at Mopar's cars that will be on display at the show, which also include a Dodge Challenger T/A concept, two crazy Jeeps and a Ram 2500 Outdoorsman that could change the way you camp. While these are some of our favorites, Mopar is bringing plenty to SEMA, so let us know your top choices in the comments section.

2013 Dodge Challenger R/T Redline revs into Chicago

When Dodge released the Challenger Rallye Redline last year, it brought a new dimension of styling to the car's classic muscle car lines, but it was only available in V6 form lacking the oomph to back up its sinister appearance. To remedy that situation, Dodge is unveiling the Challenger R/T Redline, powered by a Hemi V8 engine, at the Chicago Auto Show.
Other than the extra cylinders, most of the R/T's Redline package carries over from the Rallye model including the custom-look 20-inch black chrome wheels with red paint accents, but the R/T version of the package gets more of a retro look to the side stripes with graphite graphics featuring Redline lettering. Cars equipped with the six-speed manual transmission will get a performance-tuned, low-restriction exhaust allowing the engine to produce 375 horsepower and 410 pound-feet of torque; cars with the five-speed auto are rated at 372 hp and 400 lb-ft, but they do offer a bright chrome Mopar t-handle shifter and steering wheel paddle shifters.
The R/T Redline Group is offered only on cars painted in Billet Silver, Granite Crystal, Bright White and Pitch Black, and it adds just $1,995 to the MSRP of the Challenger R/T (starting at $31,990) and the Challenger R/T Plus (starting at $33,990), which adds features like Nappa leather and Boston Acoustics speakers.

Dodge Challenger spied exercising supercharged Hellcat Hemi V8

One of the prime complaints against the Dodge Challenger is that, even in SRT8 guise, its 470 horsepower is responsible for hauling over 4,200 pounds of vehicle. For comparison, the 420 hp in the Ford Mustang GT only has to deal with 3,618 lbs. Things only get worse from there, as the higher-performance variants of both the Mustang and the Chevrolet Camaro are far more powerful than an SRT8 without adding on much heft.
So what is Chrysler to do? The correct answer is add a whole lot more grunt to its hefty two-door and even the odds. That's where the all-new Hellcat engine comes into play. We reported on this engine in May, and suggested that the Hellcat, a supercharged powerplant based on a 6.4-liter V8, would easily generate 500 to 570 hp and could likely arrive boasting more than 600 ponies.
Chrysler's ace in its sleeve has now been spied testing, with a number of Hellcat-equipped Challengers running the potent new engine both in more urbanized areas and under the sun of Death Valley. The hoods on these testers have been raised to accommodate the engine, and that camouflage over the fascias of these prototypes is there to hide a larger air intake. We also note what appears to be a new split grille under wraps. As for power output, our spies are now suggesting a Viper-equalling 640 hp from the Hellcat-equipped cars.