For the person who is looking for a true dual Crossmember-Back exhaust system with an moderate to aggressive exhaust tone. With an easy fit in mind, these systems are constructed from 16-gauge mandrel-bent stainless steel tubing with a built-in H-pipe crossover, a pair of specially selected Super 44 Series mufflers and includes all hangers and hardware necessary for installation. The American Thunder systems deliver a moderate to aggressive interior and exterior tone and are best suited to the enthusiast who wants their performance to be heard. The tailpipes in this system exit under the rear valance with a turn-down in the tailpipes. Like all Flowmaster exhaust systems, the benefits include improved throttle response, power and mileage. If you prefer aluminized steel construction, check out optional system# 17282.
"Does not fit convertibles, staggered shock models, or cars with exhaust cutouts in the rear valance.
1967-1970 Ford Mustang with V8 engine, 2.5" 409 Stainless Steel Pipes - Aggressive to moderate sound
Flowmaster 67-70 Mustang American Thunder UNDER VALNCE SS Crossmember-Back Exhaust System
Does Not Include Header Reducers or Downpipes for Factory Manifolds
Flowmaster American Thunder Crossmember-Back Exhaust System
H-pipe Crossover for Maximum Power and Deep Tone
Super 44 Series Mufflers for Deep Powerful Sound
Includes Hangers and Hardware for Installation
Mandrel-bent 16-gauge Stainless Steel Tubing
Moderate to Aggressive Exterior Exhaust Tone
Crossmember-Back True Dual Exhaust System
6770 MUSTANG AMT UNDER VALNCE 409S
Lifetime Limited Warranty
SYS 67-70 MUSTANG AM
SYS 67-70 MU
