I JUST GOT FORD X PIPE FOR MY 05 AND HAVENT PUT IT ON YET. I ALSO JUST INSTALLED THE SUPREME AXLE BACK'S. HAS ANYONE USED THIS SET UP AND SEEN ANY GAINS. I HAVE GONE 13.30 AT 104 WITH A 1.87 60FT BEFORE ANY EXHAUST WORK AND I KNOW AXLE BACK'S MAKE NO REAL GAIN'S BUT WHAT ABOUT THE X PIPE.