The M679 (type IV) was an ambulance.
| Engine | Cerlist Diesel |
| Model | 3 |
| Cylinder Arrangement | In-Line |
| Wheelbase | 103-5/8" |
| Tread (Front) | 63-7/16" |
| Tread (Rear) | 63-13/16" |
| Height | 94" |
| Length | 184.28" |
| Width | 78" |
| Ground Clearance | 8-7/8" |
| Shipping Weight (less fuel, oil, water) | 4585 lb. |
| Curb Weight (including fuel, oil, water) | 4750 lb. |