I also Have this heater complete with all part.
While researching information on it, I found out that this is the heater that caused the stories about gas heaters going up in flames, mine works but I chose not to install it because of the potential danger.
I think the danger is its location if there is a problem the first you know about it is when you are on fire.
The control box on mine was mounted under the back seat. it looks like you are also missing the exhaust pipe