PINNACLE CXU613, Heavy Duty Trucks - Conventional Trucks w/ Sleeper, Mack MP8, , Pinnacle Sleepers are designed for driver comfort as well as heavy loads, steep grades and long hauls. They ve got the brawn and fuel efficiency to run longer and maximize your bottom line., 505 Horse Power, Suspension, Wheels, 227 Wheel Base, 22.5, Tandem Axle, Ratio, 70 Double Bunk