See my test with an electric DC motor. " dory transit a new start"
Ultimately i plan to run the AC with a 5Hp diesel pony engine for on the road.
The electric motor will do when you have an electric hookup.
If you like tinkering an dhave motors laying around then I think it is very doable.
Going to make an electric motor adapter on our small bus Elfie as well..
Good luck Johan