The rear platform didn't always look that way. Up until about 2000 the air hose was the only thing back there and the steps looked hideous. All the dump valves, retainer and whistle were found and replaced. I think we found the steam heat hose in the belly box of the 310. The steam line just dead ends past the valve. All the steam heat lines on the Durango were removed in the 1980's to make room for the generator and propane tanks. Thanks for the compliment that the end looks the same, those of us that worked on it apreciate it.