You may be right about the kick-down and acceleration being a tad more responsive with the 2017+ sport pedal accelerator module. I only accelerated fairly hard once in ECO mode with the new pedals and the response was fairly good and linear. I did not have the Sprint Booster activated at the time.The brake pedal just replaces the rubber cover. Install easy, clip from bottom and press over the top.
The gas pedal replaces the entire assembly, two nuts come off and one wiring connector. Takes about 5 minutes. The new pedal has better travel and kickdown switch feel than the original.