I am looking at this truck: Year: 2003 Make: GMC Model: C4500 Mileage: 38,210 Type: CLASS 4 (GVW 14001 - 16000) Category: Dump Truck Engine Make: GMC Engine Model: 8.1 Fuel Type: Gas Transmission Make: Allison Rear Axles: 463 Suspension: Spring Price: $18,000 Anyone running one like this? Specifically the 8.1L? How is the power? I am sure the fuel mileage is horrible but how horrible? Any input would be great I am most likely buying something soon!