Maxxforce. RUN, do not walk. Looked at one of these at auction a few year back and found some stuff out. Actually Cummins/Paccar had a 6.7 Cummins conversion program for these trucks engines a few years back. Seems thousands were sold to municipalities that failed so they offered a conversion kit. Once converted these are a really nice option. Allison auto, not as huge as the International 7300. Good turning radius and very spacious cab. You can walk from front seat to rear.