I’m not sure about sedan length vs hatch. I’d call your local dealer and ask the parts people. They should be able to tell you.
I just did my own exhaust with an OBX header, high flo cat, glasspack for a resonator, and a DC Sports muffler out back. I’m planning on replacing the DC with a Dynaflow soon.
2014 Ford Fiesta SE Hatchback
Cold Air Intake
OBX Header with high-flo cat, resonator, and DC Sports muffler and 2.5” exhaust
N2MB Two Step
17” Focal with 205/45s
3M Dark Smoke Vinyl Wrapped Lights