They were made by Detroit Products, a long gone outfit. If your driveshaft shop has parts, they will be expensive.
Always, when dealing with any tactical truck, buy from a surplus dealer and stay away from NAPA or commercial supply houses. You support those in the business, and they know what you need without those dumb looks & questions.
Try White Owl, T.W. Murray, Adirondack, Antelope Valley, A. B. Linn eTc.
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