Update: 12 Apr Added additional final drive options for the medium-duty Eaton Procision, Eaton FSO-8406A, and Eaton FR-14210B transmissions for various Kenworth and Peterbilt trucks. This engine adds a number of engines to various stock (SCS) and modded trucks. -Cummins ISB6.7 -Paccar PX-9 -Caterpillar C7/C9 -International Maxxforce DT -International Maxxforce 9 -Caterpillar C-10/C11/C12/C13 -Cummins ISM/M11/X12 Efficiency,Productivity/X15 Efficiency -International Maxxforce 11/13 -Paccar MX-11 -Volvo D13TC (Turbo Compound) -Volvo VE D12 Credits davidsteele1975