So this is mainly for looks seeing your pics. The factory intake has input from the front grill right into the box (nice functional design imo), the shaker takes air and routs in through a tube into the airbox. I would imagine there would be no difference at all between the 2. It does look cool from the cockpit I must say.
2012 Mustang 5.0 - 2002 Focus ZTW - 2012 Kia Soul - 1969 Mustang GT