With the 2013 Shelby GT500 putting out 662 horsepower and 631 pound-feet torque, we’re guessing that more than a few owners of the new Chevrolet Camaro ZL1 will be looking to even things up via the aftermarket. The speed-obsessed guys over at Lingenfelter Performance Engineering are already putting a few options on the table with a three new upgrade packages that boost the supercharged 6.2-liter V8 to anywhere from 630 to 700-plus horsepower. Funk Flex