The Dady Rat was built by Johnny Stauffer with the help of this son and two grandsons to be one amazing rat rod. The body and rear tires are from a five ton military truck which sit on an air suspension and hand-built custom chassis. The drivetrain consists of a 19.0 L Deutz 513 twin-turbo diesel V12, Allison automatic transmission, and a school bus rear end. You don’t see many projects with an air-cooled V12 that size capable of producing 1,400 ft-lb of torque. The project has 1,300+ hours in it.