MP 7 engine with only 76,000 miles and only 9,000 hours, an Allison HD-4560-P automatic transmission, 20,000 lbs. front axle, 46,000 lbs. rear axles on Mack Camelback suspension with FULL LOCKERS, a 5.04 gear ratio on hub piloted rims and A/C. This truck has nice, clean tight double frame with about 21-22ft. of frame behind the cab. This truck has been municipal owned and maintained, NO rust.