This is for the customers that have no use or need for mufflers. This is for the headers and midpipe ONLY The midpipe does connect to any particular exhaust out there After a successful proof of concept and development on the Corvettes, we present you a brand new soundtrack to the Coyote. Equal length 8-4-1 headers for the Coyote engine set a new sound standard for the Coyote. It was long considered impossible to fit equal length headers into the 2011+ Mustang. In order to accomplish this we had to further push the boundaries and think further out of the box than any company has done for a production header. The Headers Individually CNC flanged 1.875" primaries Double slip joint 2.125" secondaries Custom CNC engine brackets (OEM mounts) Custom titanium studs and hardware to facilitate the installation Manual transmission version uses a flat 4-1 collector to retain correct wave tuning lengths. Automatic version is experimental in regards to header lengths.