hot water heater

Is wasbling around the driveway today and came across the old hot water heater .I'm too lazy to look up the name .It think its a Bowen /I saved the beautiful chimney that came with this heater and bought another one on the bay.
I have a new Atwood ,3 gal ready to go in
My dilemma is deciding whether to lift the body off the frame and rebuild the chassis .I am thinking about that because I have read too many other peoples blogs regarding the renovation.Any thoughts would be appreciated.
When my sons and I finally got the water working the water poured out of the ignition tube .Obviously one of the previous owners never drained it

The best I can tell is that the original owner was in Michigan.When I bought it from a flipper in N.C. there was a Town of Babylon parking sticker on it .Babylon is about 75 miles west of me I plan to join the Vintage Airstream club ,they may have some info on the vehicle.