Two pictures of Crippen Ambulance Service 64. She was a 1976 Superior 54XL. My first rig, I put almost 50,000 miles on her in the 2 years I worked there as an EMT. Best ambulance ever. A little cramped inside, but a smooth ride. She had a limo suspension and air shocks on the back. 500CID V-8 with a 4bbl carb.