This from Niko Stefani:
Here is the new Ambulance 21. I have included a picture of the old one.

Evanston FD Ambulance 21. Niko Stefani photo

Evanston FD Ambulance 21. Niko Stefani photo

Evanston Ambulance 21 – 2016 Ford F550/Horton Type I. Josh Boyajian photo