It's one piece. SorryCNred said:OK so i was looking under my car today because i went to go measure my cats because i am going to be making my self some test pipes hopfully. Any way all i found was the two bolts after the cats... how does it disconnect from the header. surley it is not just one unit. I saw the steel mesh up towards the bottom of the header does it hold on around there like a coupler or does it disconnect in another spot. Any one know?