I have a nearly stock 2019 Fiesta ST that has an MBRP exhaust on it that I find annoying. The car had only 24k on it when I bought it so the aftermarket exhaust puzzled me. I have never heard an ST with a stock exhaust ! (I have a Thermal RD 3” exhaust on my modded ST and like it but would like something mellower for the stocker). This car will probably never need a larger exhaust. Unfortunately, piecing together a new stock exhaust is ridiculously expensive and I have no idea whether it would be any “better” (mellower ? Less “droney” ?). There are a few used stock ones around in decent shape But not sure if it’s worth the effort. Thoughts ?