When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Old school would call them exhaust header. exhaust pipe, muffler and then tail pipe, on most all cars. I guess on the newer Mustangs, it would be exhaust header, cats, x or h pipe, mid pipes and then a muffler/tail pipe combo.