Hi Omar302
It was a simple swap. As for the power you definitely feel a difference in the sports mode, they are both powerful vehicles but I feel the eight speed transmission is much smoother drive, the Sport is more raw, more like driving the the F150 the engine came out off.
The lights on the 2015 were barely livable but the ST are 100% better, it's like 'day and night' (pardon my pun!) the difference.
Having said that I still only have 750 miles on my clock so maybe in another couple of thousand miles I will have much clearer thoughts on how the ST manages a NY/NJ winter!