A stretcher receiving system is provided for installation in an interior compartment of a vehicle, as well as a method of converting a vehicle to a stretchered passenger carrying vehicle. An example of the system includes a plurality of adjustable mounting assemblies, capable of being attached to an interior surface of the vehicle compartment. The mounting assemblies support an adjustable frame assembly which may have at least two vertical posts. Interconnecting these vertical posts is at least one stretcher receiver adapted to hold an end of a stretcher.