Do all 2012 Ram 1500 with single in dual out have the same size pipes (3 in, 2.5 dual out)? I took a Magnaflow 14 inch #12198 to a shop today to have installed. The guy told me the muffler doesn't line up right, the pipes going out are 2 1/4 inches and it would taken quit a bit of modification to have it fit. I had him put the original muffler back on and think I will take it to a shop that I have used before that I have confidence in. Did I order the right muffler? I just want the old one out and the new one welded in, I realize some pipe will be needed to compensate for size. Thanks