Ford Mustang Cobra 2003-04 Exhausts - Factory Connect is a stainless steel 3'' exhaust system, CNC Mandrel bent from 18 gauge for lightweight. Includes x-pipe and bolts to factory manifolds, 4'' rolled edge tips. Our Performance Connect is a stainless steel 3'' exhaust System, CNC Mandrel bent from 18 gauge for lightweight. Includes x-pipe and bolts to Stainless Works Headers, 4'' rolled edge tips.