Careful when cutting out the original Y-pipe. The factory steel is double walled and tuff! Get many sawzall blades. You will see that after the Y, the exhaust heads towards the Cat. There is a bolt together union just before the cat, just ahead of a cross member. All the vibration from the saw broke the pipe off at that union. I had to re-weld that as well. Wasn't too big of a deal, bud it did add to the work.