The Mack GU713, part of the Mack Granite series, is a heavy-duty truck known for its versatility and ruggedness, particularly in construction and dump truck applications. Key Features and Specifications: Engines: MP7: 11-liter engine with 325-425 horsepower and 1,250-1,550 lb-ft of torque. MP8: 13-liter engine with 415-505 horsepower and 1,650-1,900 lb-ft of torque. Cummins L9N CNG: Natural gas engine with 320 horsepower and 1,000 lb-ft of torque (available in 6x4 axle-back configuration). Transmissions: mDRIVE HD: Automated manual transmission (12, 13, or 14-speed). Allison RDS Series: Automatic transmission (6-speed). Eaton-Fuller: Manual transmission (10, 11, 13, or 18-speed). Axles: Mack and Meritor drive axles are available, along with Dana Spicer axles. Suspensions: Various options including leaf (mRIDE, Mack Camelback), air (Mack AL, Hendrickson Primaax EX, Neway ADZ), and rubber (Hendrickson Haulmaax EX) suspensions. GVW: 35,000 - 92,000 lbs. GCW: 80,000+ lbs.