50,953 actual miles, 6.9L IDI engine, Allison AT 545 4 speed automatic, air brakes and 5.57 rear axle ratio (I think) It's an old blue Air Force bus with auxiliary diesel engine that runs A/C and alternator unit.
I bought it 12-8-2016.
1987-International Navistar/AmTran-S-1753 Model SS-22...