It’s a time-honored tradition for late-model Mustangs. Upgrading to a performance exhaust system not only improves horsepower, it also adds that Mustang-specific exhaust tone that has been so popular ...

These SLP headers have 1-inch primaries that dump into a 3-inch collector. Made from stainless steel, they're advertised to produce an extra 23 hp and 21 lb-ft at the wheels. The set pictured has an ...