Bruce,
If memory serves correctly, this car was kitbashed (or maybe scratchbuilt) by SVRR members back when the organization had little or no MOW equipment. Not sure where the trucks or frame came from, frame may have been scratchbuilt as well. The hopper began its career as a belly-dump type semi-trailer. At the time, SV had CETA or SILD crews performing track work during the week, the crews were ballasting track by hand-shoveling about a ton of rock onto a push car and moving it up the line with a little 2-stroke Fairmont speeder, then shoveling it off again. Brutally hard work, an inefficient use of manpower, and the speeder - which was never intended for that kind of heavy hauling - was on it's last legs. This car was a great step foreward allowing us to work as much rail in a day as had been done previously in about a week.
J