Here is an old photo I came across of me and my first truck mount circa 1993. You can't see much but the vehicle is 1984 Mazda b2200 long box with a diesel engine. The cleaning unit was a J.E.M. built by local legend Jim Miller. Power take off from the diesel engine and a little giant 4ht propane heater. Cat pump and sutorbilt #4 blower. It was powerful and hot. Just not a lot of room for anything else. Perfect unit for the city.