Flowmaster - Flowmaster American Thunder Axle-back Exhaust System Note that sometimes this material

Note that sometimes this material is referred to as "fireproof"

Engine - Mark IV / Gen VI - Bare Block - 4

545 in OD - Manganese - Bronze - Edelbrock Heads - Big Block Chevy - Each

84 in Diameter - Aluminum - Black Anodized - GM LS-Series - Each

terminal nuts

Flowmaster - Flowmaster American Thunder Axle-back Exhaust System Note that sometimes this materialThe Flowmaster American Thunder Axle back exhaust system for the 2018 2023 Ford Mustang GT with the 5. 0L engine is perfect for the person looking for an aggressive exterior sound level with all of the performance benefits that you would expect from Flowmaster. This bolt on 409S stainless steel system features 3. 00 inch mandrel bent tubing and two Super 44 series mufflers for maximum power and exterior sound quality, but with a moderate and pleasant