{"product_id":"borla-cat-back-exhaust-1999-1904-ford-mustang-gt-4-5l-v8-ss","title":"Borla Cat-Back Exhaust – 1999–1904 Ford Mustang GT 4.5L V8 SS","description":"\u003cp\u003eRather than treating the 1999-1904 Ford Mustang GT 4.5L V8 SS as a universal exhaust application, Borla engineers this configuration around the vehicle's specific layout and intended fitment. Compared with leaving the corresponding factory section untouched, this cat-back exhaust system reworks the exhaust downstream of the catalytic-converter section for a broader change in tone, flow character, and rear-of-car presentation.\u003c\/p\u003e\u003cp\u003eIt is a strong fit for an owner who wants the exhaust upgrade to feel complete—sound, visible finish, and the character of the system behind the catalytic-converter section—rather than changing only the rear mufflers. In practice, this product is best suited to enthusiasts who want a stronger muscle-car soundtrack and a more assertive rear-end presence for spirited street use, meets, and occasional track work.\u003c\/p\u003e\u003ch3\u003eApplication Focus\u003c\/h3\u003e\u003cp\u003eFor this specific \u003cstrong\u003e1999-1904 Ford Mustang GT 4.5L V8 SS\u003c\/strong\u003e listing, the configuration should be chosen according to the exact vehicle equipment and the variant selections shown below; similar-looking Borla systems can differ in routing, valves, outlets, or tip treatment.\u003c\/p\u003e\u003ch3\u003eAbout Borla\u003c\/h3\u003e\u003cp\u003eBorla has been developing performance exhaust products since the late 1970s and is known for combining vehicle-specific fitment with distinct acoustic personalities for enthusiast applications. That background makes this product a natural choice for a build where exhaust tone and fitment matter as much as simply replacing factory hardware.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFitment note:\u003c\/em\u003e Confirm model year, engine, trim, factory exhaust equipment, and the selected Borla part number before ordering.\u003c\/p\u003e","brand":"Borla","offers":[{"title":"Default Title","offer_id":50131200573690,"sku":"BOR140458","price":1249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/0968a9c3e2dc93979a21de3d7e567423.jpg?v=1783041428","url":"https:\/\/lgcracing.com\/products\/borla-cat-back-exhaust-1999-1904-ford-mustang-gt-4-5l-v8-ss","provider":"Legacy Racing","version":"1.0","type":"link"}