They ran to '87 on trucks, '91 on Blazer and Suburban. They're also still available new from Kelsey-Hayes. One thing to watch for on the later ones, they have 6 tabs in te center bore that interfere with the fit on the older truck hubs. They added them to make for a tighter fit on the 4x4 hub on the later trucks. They're not hard to grind out, though.
