Free Dometic RM-100 for pickup only in West Houston.
See the actual unit here installed in a '78 Sovereign
Unit works, but does not get as cold as I would like.
I suspect the gasket and the mating areas are letting too much cold out.
Issues with the electric thermostat and the gas/electric switch shaft.
I have never run this unit on gas, but I think the gas section would work with a bit of maintenance.
PM me for directions and questions.