I have a set of flowmaster american thunder axlebacks that I got from american muscle in March. They have 4000 miles on them and are in good shape. Here they are on AM
Flowmaster Mustang American Thunder Classic Axle-Back Exhaust 817460 (05-10 GT, GT500) - Free Shipping
SOLD
Flowmaster Mustang American Thunder Classic Axle-Back Exhaust 817460 (05-10 GT, GT500) - Free Shipping
SOLD
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