Fitting Vehicle Options: 63 - REG CAB CHASSIS WHEEL BASE 1, 64 - REG CAB CHASSIS WHEEL BASE 2, 65 - REG CAB CHASSIS WHEEL BASE 3, 66 - REG CAB CHASSIS WHEEL BASE 4, 9 - TRUCK, 93 - CREW CAB W.B.4, DF2 - 6-Speed Automatic Transmission Aisin AS69RC HD, DF3 - 6-Speed Automatic Transmission AS66RC