(!) Header-pipes were designed to transition a TTi header to a factory-direct exhaust system.
Inlet:  3.0" I.D. socket inlet with a 3-bolt floating flange
Outlet:  2.50" O.D., 2.70" O.D. or 3.00" O.D.
Length:  26.50"
Cat-Eliminated Header-pipes equipped with (4) O2 bungs positioned in standard locations.
Header-pipes include:  (4) O2 sensor extension harnesses, (4) SS band clamps, Socket bolts, nuts & washers necessary for the bolt-on installation.