2025 Peterbilt 388 sleeper trucks only 170k miles on engine rebuild with paperwork, Cummins, ISX, 450hp, Jake, 40,k rears, 63" stand up sleeper, dual stacks heavy duty Cummins 450 hp Eaton or fuller 10 speed gear ratio3.55 mid roof sleeper size 63 in. 1 bunk front axle weight 12000 Ibs. rear axle weight 40000 Ibs.