From lifelineambulance.com:

Reference #: 5658
Model: Superliner Type I
Dealer: Klocke’s Emergency Vehicles
Module Size: 167″
Headroom: 74″
Chassis Make: F-Series
Chassis Type: F450
Wheel: 4WD
Air Ride: Liquid Spring
#chicagoareafire.com; #ambulance; #Ford; #F450; #LifelineAmbulance; #PontiacFD;

Lifeline Ambulance photo

#chicagoareafire.com; #ambulance; #Ford; #F450; #LifelineAmbulance; #PontiacFD;

Lifeline Ambulance photo

thanks Martin