yes, you would trim the lead pipes to your application as well, each exahust is diffrent, but yes, will slip over with a single connection clampI am interested in these headers. Just so I'm clear...I would cut the neck-down portion of my MBRP Race catback and then this would slip right over the 3 inch section without welding? So it is actually a larger diameter than 3 inches so it'll fit over the catback right? Also, please PM me a price shipped to 07753. I would like the SP catless with XL connect pieces. Thanks.