We think the bone-stock 2008 Dodge Challenger sounds pretty slick. With all 6.1-liters of Hemi fury burbling out of the back of the car, there’s no denying the sexiness of the car’s song. Still, the scientists at Magnaflow know that the stock exhaust is holding up even more ponies and an even better chest stomping rumble, so they’ve kicked out a cat-back system just for the Mopar. The three inch stainless steel system features a resonator and dual mufflers with 4 inch tips. It can also be had without the tips to retain the stock look. Magnaflow claims the system is good for a boost of around 12 ponies and 18 lb-ft of torque. Now if they could only manage to shave a few hundred pounds off of the car.