ok guys, i am tired of this damn leak in my UPR x-pipe... i have reinstalled it like 6 times to try and fix it, no luck . it used to leak when i had it in my GT too. u cant hear the leak unless i'm downshifting, or changing gears when the rpms drop... i even tried taking it to an exhaust shop to fix it. the guys said he couldnt hear it. he said "i cant fix what i cant hear". i think he was just being lazy. well anyways im tired of messing with it. what is the best fitting mid-pipe out there. i dont care if its and X or an H, as long as it is catless and fits good so no leak. thanks mustang crew!!!!