It depends on where you want power at, with the Shorties I have a lot more low to mid range power and a much smoother Acceleration going past 3500 RPM. I am also running Stock Cats with the FRPP Cut and Clamp X-Pipe.
I like to drive in the mountains, and there is a lot more down low than stock, where I would be downshifting one more gear it picks it right up now.
2013 Performance Package V6
2013 F150 6.2L Boss
Yes it is a Boss