With a 6.4-liter HEMI V8 engine pushing 465-horses 465 lb-ft (630 Nm) of torque for 0 to 60 mph (96 km/h) sprint time of 4.8 seconds and a quarter mile time in the mid-13 second range, the regular 2012 Jeep Grand Cherokee SRT8 is one of the fastest production SUVs around.

 

But for Hennessey Performance Engineering [HPE], that's not enough. The Texas based tuner, known for its outrageously powerful tunes, has done it again with the introduction of the 2013 HPE800 Twin Turbo Jeep Grand Cherokee.[...]

Source: Carscoop