88-89 GMC C3500 Sierra 7.4L 3in Cat-Back Single Exhaust - Stainless Gibson 615556L

Gibsons best performing exhaust is perfect for improved acceleration, maximum hill climbing, towing and passing power. Exits behind the rear tire near stock location with a polished Stainless Tip. Dyno tested results have proven increases as much as 32 horsepower and 60ft lbs of increased torque. Hassle free, bolt-on installation with professional looking results.