since nobody can figure the coachmaker for 20 years maybe can be listed as Dodge M-Series , this Dodge chassis plus engine were used by roughly 50 coachmakers in the 70s ...

https://www.imcdb.org/vehicle_29186.html
https://www.imcdb.org/vehicle_1344106.html

nearly same story, coachbuilder badge can't be read here we even have Dodge badge inside
https://www.imcdb.org/vehicle_1979629.html


https://www.imcdb.org/vehicle_1999255.html