That is a very cool old workhorse indeed. You might check with the folks over at the Professional Car Society
http://www.professionalcar.org/ for some assistance with the car's history.
The ambulances I drove a few years ago were 70's Cadillac’s and later Ford E-150s, 250s and finally they figured out they needed 350s. Now, they are using E-450s - go figure.
One of my dreams someday - long after I finish getting my old “stove bolt” back on the road - is to get me a 1976 Superior Cadillac ambulance to restore. However, I hear they are an expensive project because everything was custom made by the builder and requires a lot of fabrication work. So, we we’ll see.
Anyway, congratulations on your new project! It looks like a lot of fun!
