These Headers are as always direct bolt on and do not require any modifications. At the end of the video they will show the dyno test results. Add a BBK throttle body and a performance cold air kit and you will really feel an even bigger difference.
The Parts used in this video are as follows:
BBK 2011,2012 Ford Mustang GT 5.0L Shorty Tuned Length Headers - Chrome - Part # BBK-1632
BBK 2011,2012 Ford Mustang GT 5.0L Shorty Tuned Length Headers - Chrome - Part # BBK-16320
BBK Performance 2011, 2012 Ford Mustang GT 5.0 50 state legal after cat X Pipe Part # BBK-1460