Looking for a replacement 3 prong ignition switch, driver seat, and any parts manuals
Parts manuals are easy, and free: http://partstore.casece.com/us/parts-search.html#epc::mr49912 once you get your part numbers, try: http://e-backhoeparts.com/ BTW, the last 580C was in 1979 or early 80, the D came out in '80.