The M43 is the ambulance version of the M37. Built on almost the exact same chassis (frame is approximately 6 inches longer than the M37), this ambulance saw action all over the world beside its M37 counterpart.  The M43 differed from the M37 by having a full sized enclosed box on the rear of the vehicle instead of the regular pickup bed. There are two large doors which open outwards in the rear, and a sliding door which connects the cab to the rear compartment. M43’s also came with spot lights on the roof (controlled by either the driver or the passenger in the front cab), and a spare tire on the drivers door. Many also included the use of a red spinning light on the roof and siren. Yet these two features would never have been activated on a actual battlefield, as they would attract the attention of the enemy. Something which the medical personnel who were operating the ambulance could not afford to do. In the rear there is a stretcher rack system which could hold up to 4 persons at a time. The rack system was also collapsible, letting you sit up to 8 people in the rear of the truck. An interesting feature located in the back was a folding step for getting into the back of the truck. When folded back up into the back of the truck it acted as a seat for medical personnel working on the wounded on the way to a medical unit. Also located in the back was a light fixed to the inside of the roof near the front cab. It could be folded down and turned towards a patient. The bulb has a blue filter on it which would make blood stand out in the dark. There is also a permanently installed fuel powered heated located in one of the storage boxes in the rear section. Fuel is taken from the gas tank to run the unit. This gave heat to the wounded in the rear section in cold months. Heater controls are located on the wall between the cab and rear section.