Im going to be purchasing an off road x pipe to go with the Tune and Airaid for my 2014 gt M6. Ive been looking around and there seems to be a pretty wide swing on the price from manufacturer to manufacturer. UPR starts out at around $260ish, to $300 for a lethal or pypes, to significantly more for a magnaflow. Im assuming the only differences are in the build quality, finish, and maybe the brand name? I was considering the UPR or lethal. Does anyone have any feedback as to fit and finish on these pipes as opposed to the more high dollar options? I tried the search function but x-pipe seems to be an all to common term. As always, all feed back amd advice would be greatly appreciated.