Quick view Gibson Gibson 03-07 Ford F-250 Super Duty XL 6.0L 4in Turbo-Back Single Exhaust - Stainless - 619623 Compare $1,449.99 Gibsons best performing exhaust is perfect for improved acceleration, maximum hill climbing, towing and passing power. Dyno tested results have proven increases as much as 32 horsepower and 60ft lbs of increased torque. Hassle free, bolt-on installation... Add to Cart Add to Cart