I'm wondering if this Dodge conversion is related to Revcon in some way.
Revcon was building front wheel drive motorhomes in Southern California in the 1970s. Later, the company made a 4x4 Class A RV called the Trailmaster, and the Trailblazer, an RV based on a 4x4 Ford pickup chassis with tag axle. The company went out of business in the mid 2000s. It's possible that the Dodge conversion was inspired by the Revcon products, or even made by former Revcon employees. In any case, the body work looks good.