Not sure which 1991 Ford Mustang Performance Mufflers are right for you? We have over 976 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"The sound of the flowmaster muffler is excellent. I like that the mufflers have that "just broke in stock sound" They sound great and installed easily. I would recommend them to anyone." —Andrew K from Fremont, OH bought a Flowmaster 50 Series Delta Flow Mufflers for a 1991 Ford Mustang.