The parts are going to have to come from a HD truck parts company. The company that made the vacuum step is no more, but I have heard that the parts can be approximated from parts catalog, if you can find the right catalog.
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Brett G
WBCCI #5501 AIR # 49
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1978 Argosy 28 foot Motorhome
Wise men talk because they have something to say; fools, because they have to say something. -- Plato
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