Flowmaster American Thunder Exhaust System, 1967-1972 F100

Flowmaster American Thunder Exhaust System, 1967-1972 F100

Flowmaster complete exhaust system can be easily fit to most long tube headers and engine swaps.

• 3 exit options - out the back, out the side or dumped behind the tires
• Built in H-pipe, 2.5 inch 409 stainless tubing
• Super 44 mufflers for a classic V8 rumble
• Fits short or long wheelbase without a side tank

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