O.k. I ordered a Magnaflow X pipe, 2 magnaflow mufflers with the idea that I could get a true dual exhaust made. I'm being told by local exhaust shops this cannot be done on this truck. They said in order to get the true dual you would need to cut into the stock Y pipe and make them seperate, however they said this would make the sensors malfunction and produce unwanted results (they know this from trying it before). I know there are some folks out there that have done the true dual setup...my question is how did you do it? Did you have to buy new down pipes from the stock headers along with new cats? Need some info please.